this man throws out videos that i have been looking for, for 7 years.

This is the reason I subscribed to you my guy. You have soooo much knowledge and are very descriptive with what you say. Thank you so much!

The fact that this video has no dislikes just shows how quality your content is

Hey man, Cheers! This video will continue to be a blessing for ages; I recently did a 1-4 pull on a pretty hot day (not the greatest idea) and my dam dropped to 0.812 mid-pull with coolant temps touching 207. and has been like that for a few days now 😅 wish her luck, and thanks for all the videos 🙏

Still helpful even after over a year! Thanks Tanner, good to know the -1.4 - 2.8 is norm! DAM is good and so is the STI!! 🤙

This man stay spitting out gold content 👌

By far the most informative and straight to the point channel. Love it, save your time cause Smeedia is the best 🤜🏼🤛🏼

Thanks for the info! Love the vids. Keep em’ coming. Just bought and installed accessport and intake 2 days ago. These were some of my questions. Thanks again👍

Ouuuu! I'm not ready for an anxiety port. Lol

Always great content, very much appreciated! I have a '15 WRX and noticed probably within the past year that when I put e85 in the tank (whether it's 60 or 80 final %), I tend to get -2.81 knock learn and DAM drops. It tends to happen when I hit 4PSI of boost, so I just end up staying out of boost when that happens. It wasn't like that before. I've swapped my spark plugs and ignition coils out so next I will need to do either compression tests or check for vacuum leaks, probably both. When I reflash the tune, the car tends to ignite, then die shortly after about 4-6 times before it finally idles properly. I do have 112k miles on the vehicle so hopefully with those two tests, I'll be able to pinpoint the problem.

I was worried for a second... my DAM has only been at 1 thank god. I was getting a negative feedback knock, but was worried for a sec. Thanks again for the informative video and a sense of relief!

Just an idea for a sticker. "Risk it for the Biscuit! Great content as always.

I wanna hug this guy

Great information . I had serious issues with cobbs big sf intake and the accessport on my 2021 wrx . It drove me insane seeing my dam drop and feedback knock fluctuate all over . My af learning was my biggest problem by far tho going -35 to +25 all the time . I realized the intake was the issue . The relocation of the maf sensor made my car lose its mind with all the turbulence going on in that intake . I removed the big sf and installed the stock air intake and sure enough my car regained life . My dam is always at 1 . My feedback knock is 0 and my af learning 1 numbers are either -1 to +3 . Insane how that part created so many problems .

Just found this channel, great content, subscribed 🔥🤙🏻

Nobody: Literally Nobody My Subaru: KNOCK KNOCK💩

This is perfect timing for this video to come out 🙌 I've been having some frequent knocks from -1.4 to -2.8. It was making me not want to drive the Subie until I can get it checked out for any major issues. I guess it's fine since my DAM has never moved from 1.000 🤷‍♂️

Between Your What to Monitor on your Accessport Video and this one, Thank you. Had a Fine Knock Learn of -5.62 followed by a .35, no Feedback Knock and at the time i wasn't monitoring DAM. Called up the DAM and it was .875. Was Running the MAPerformance Stage 1 93 tune, went in and changed it to the 91 Tune and all went back to normal, no Fine Knock Learn, DAM at 1. Clearly i got some less then 93 gas, so i'm running it off (staying out of boost as much as possible) and then a new tank of 93 (from a different place) and hopefully the numbers stay where they should be. Then I can switch back to the 93 Tune. Anxiety yes, but also doing things to get thru mishaps without doing damage.

Vids are on point🤙

Well done Tanner

Awesome! Thanks.

My DAM has always dropped when I'm just cruising at highway speeds in 6th gear. Around 2500 rpm and no boost for extended periods and what makes it rise back to 1 is extended periods of time with minor positive boost, 0-4 psi. Also oddly enough my wrx is picky on gas stations, DAM always drops when I use chevron and shell fuel regardless of where in the state/area I go to.

You've helped my anxiety slightly thank you dam stays 1.000 but some FBK of -2.80 on occasion and occasional fkl of -1.75

Great video!

Nicely done as usual brother , I can't use the Cobb on my JDM Ej 207 , but a pro-tune is always better . I'd like to see a review of stand alone ecu's , there's more all the time ! I buy my fuel here in Canada at the airport 100 octane right from the pump !

Cruising from LA to Oakland in a 2014 WRX with cruise control and A/C i would get a random -7.0 feedback knock log as well as a relatively common -2.8 and -1.4. With the A/C off i will sometimes see a -3.5 and -1.4. I’m on a stag

Thanks bud awesome vid!. :)

I finally got the accestport etc snow finally started to go away here in Alaska, so i started to drive a lil bit more faster and going on cruises and did a couple pulls here in Alaska we only get 90 so i got a royal purple octane booster recently, first time using it got a missifre cylinder 1 and 3 also a code pppffff car fell weird but it when back to normal when on cruising awesome everything good eventually i almost ran out of gas fulled the tank with $40 and i forgot to put the octane booster in when to a car meet everything good at one point randomly the car started knocking but only when driving it i was able to drive home slow etc and next day dropped car at dealership now waiting for tomorrow to hear what they have to say. it knocks only when i drive not standing still, is a wrx 09 impreza with a rebuild engine sti short block already tune, and on the accestport i was using stage 1 91octane since i am still waiting on the intake, what do you think about this.

Thanks for this video. I'd see dam drops on occasion at wot. It would fix itself but on the dyno my tuners wideband indicated after a few pulls my fuel pump would get tired and lean out the tune. I replaced the fuel pump and filter and now seems to run fine (watching with my own wideband)

Nice lighting!

Also I would mention that ots tunes can give you knock and dam drop if your car doesn’t like it

Yes definitely the anxiety port. 🙃

Weird suggestion but after watching this video, you should make a video where you’re just driving and comment on what you’re thinking about as you’re driving while watching all of the gauges, air condition, heat, when you’ll know it’s the right time to hit boost etc POV style maybe?

nice! can you talk about AFR, AF correction/learnings as well

I just added a tomei catless downpipe, replacing my catted downpipe on my 2006 sti , I bought the acessport as well to tune it with ots stage 2, my DAM is at 0.000 / 0.00 and my feedback knock is at -4 and spikes up more , I’m not to sure if I should be worried , it has an intake as well.

How much does heat affect the dam readings you figure? My dam has been dropping as low as .358 these last few days. It's also been excessively hot for the last week or so. I've read somewhere that outside heat can make the dam drop. Also, how long does it take the accessport to relearn your driving habits after you change tunes? I got scared and reflashed the tune a number of times over the last week, and someone said it hasn't had time to relearn my driving habits, that's why my dam is dropping. I'm too new to this to know what's going on lol

I just got an AP a week ago and have noticed a little bit of knock here and there. With the AC on its kind of frequent. It hit -3.82 once on the way home today but hit -1.41 like 9 times during a 40min drive. Earlier with the AC off I had my fine knock learn hit -1.41 which kind of got me nervous. When the AC is off it only really knocks when I push it a little bit. Like when the turbo kicks in. I have a Perrin “no tune needed” intake which I feel like is fucking with the system so I’m considering just getting the Cobb intake and going to the Stage 1+ tune. Or getting a pro tune? I only have the Perrin intake and an axle back so idk if that’s worth it.

I have DAM drop to .875 consistent for 2 tanks of fuel from the same station I’ve always used. I only read feedback knock when the compressor kicks on and off -1.4 I think BUT I read -6.88 on fine Knock Learn from 2400-2700 RPM in every gear but 1st and 2nd when accelerating gently (20-30%) acceleration. I’ve ran the same pro tune for 9 months with no issues until this last week. I do notice any difference in the car other than it feels a little sluggish.

INSANE knock numbers and DAM to 0 … this is going to be fun

Crazy how I see this vid after seeing some action happening with my dam and fbk. so recently I had fueled up my car and all a sudden my fbk will fluctuate between 2.66-4.22 (it mostly stays at 0 though) and my dam went from 16 to 15 and has stayed at 15 for the past day now. I drive a 04 wrx and I don't really drive hard (barely go pass 4k rpm) and I only have a stage 1 ots tune that's been working perfectly fine with me. I'm hoping that it's just the fuel that I got, I only go to chevron stations and use 91. Hopefully on my next fill up this goes back to normal.

Had the DAM drop from 1 to .875 and saw FKL of -1.40(no feedback tho) the other day getting onto the freeway at only 3psi in 3rd and 4th gear(30 ish % percent throttle). It appears to be "learning" and the FKL is slowy creeping to 0 albeit in very small increments of about .04 or sometimes a bit more, and it will increase or decrease slightly. Seems dependent on RPM as certain RPMs with yield higher or lower values. No CEL or stored codes and AF learning values are within + or - 5, and its not running lean under load, no leaks as well. Its an 05 STI and am still learning the car, but Ive never had this happen when I owned my 02 WRX for about 7 years driving in rush hour traffic in 100+ degree AZ heat around this time. If knock did pop up, it quickly zerod out, but DAM never dropped, never had CEL or stored codes either. I am/was also running the Cobb ACN91 stage 2 normal wastegate map but with catless downpipes on both cars. Otherwise theyre are stock aside from a Perrin Turbo inlet and afta maf hose. Sadly tuners probably wont touch them even if theyre registered where we were not required to test emissions nowadays. I hope it will eventually learn, zero out and DAM will go back to 1...Any thoughts? Ive been obsessing over it lol

I just "finished" my car project. I'm having some feedback knock -2.11 or -4.22. No Dam drop. The only thing that you mention that could be my issue is the tune. Im running on a tune for break in the engine.

First KZfaq that came up when I got my first fine knock

had this problem a few months ago dam drops with acceptable to zero knock... Octane booster is like the one thing that helped me. even after getting a retune the octane booster really helps. i only use haft a can of royal purple each tank fill about 7-8gals. My shims on the heads are what is probably starting to go bad... hope that helps anyone that has dam drops with acceptable to zero knock.

I’ve got a 19sti. Been on Cobb stage1+ SF 93oct for about 3 weeks. All has been good. Until today. I picked up some bad gas or so i think a couple days ago so I added some VP Racing Octanium Unleaded. FBK would jump around from -1.4 All the way to -11.75 for a brief second but return to 0.00 FKL has went up to -8.XX and my DAM sat at 0.188 for more than 30miles. I ran the tank out to the dummy light and put in 93oct from a different gas station and after 60miles the DAM was still at 0.188. I hope like hell this might be from a dirty MAF. I reflashed to 91oct when I parked the car and won’t know if it’s helped until I head back home in a few days. I’m def a bit worried lol car has 31,327miles. Bought new with 6miles and stay on top of maintenance.

What if my fine knock learn is spiking to .35 instead of going down?

I have a WRX 2013 with a short block rebuild. I am seeing my knock feedback counter on CYL 2 increasing a lot. I replaced coils and spark plugs, I did noticed that it only does under light load mostly when cruising. DAM is 1 all the time and I did noticed sometimes is pulling time to -11.2, idles great and power seems normal. do you have an idea what can I check next?

I had my 13 STI Tuned recently and it was running good and everything. But now I’m getting high feedback numbers and fkl , sometimes the dam drops to .7 or .8 but goes up again. And sometimes it stays at 1. Only in boost though … Stage 2+ e-tuned

Im not sure if you will ever see this but I had my recently go to -11 on FBK and -7 on FKL but DAM stays at 1. Any thoughts? Man if you do reply, I appreciate your time and knowledge.

Hey bro, i recently bought cobb ac v3 for my 17 sti. Do you plug in 24/7? Or leave the obd2 plugged in and take out ac when in/out of the car? Thing is I would love to see the 6 screen all the time. Please advise! 😁

Love you ;)

Hi I got wrx sti 2016 It has dam dropped down to 812 and my fine learn knock number is going up when am driving no engine light on what can be the cause?

How often do you detail your engine bay? Your engine bay is clean!

Just got my 2018 wrx. Have a DAM of .5 to .750. I havent put fresh gas myself, just whatever the dealer may have put it. Im getting FBK of -1.41, -2.81, and occasionally -4.22. But im also getting FKL of -3.5 to 1.05. Is my car screwed? :( i only take it to work, on the highway, and around town. Stock tune, stock parts.

Had -4.9 FBK and FKL with DAM Drop on Stage 0 (Down to 0.4xx [start 0.688]) (Stock + catch cans). Happening soon after getter an injector clean done (Ride was SOO MUCH smoother) and new Sparks. (Mostly in cruise, low throttle) But very soon after cleaning the throttle body. I wouldn't too much if the DAM wasn't dropping. New spark, oil, clean throttle body and intake. No notable noise difference at idle, getting these readings that are dropping DAM. *Very new to working on cars, let alone a FA20DIT xD Just about to get e-tune with CAI install

DAM just dropped for the first time to 0.812 on a 2nd gear highway pull, guess I should get a protune asap

@smeedia car dropped to 12 dam then went up to 15 and stayed there. Also fine knock learn also was at -4.22 but also went into positive .35 never seen it go into positive. Are these number bad? 04 wrx with 205k miles on original motor

My Dam has not left 1. But some times on a cold start I’ll get some high readings on the feed back knock in 1st gear, -7.3 or -11.8. After the car warms up a little I will only get the -1.4. MAP stage 1 + tune with the MAP intake rev 3 19wrx

Need some help, was doing wot data logs for my newest tune revision. 21 sti, Looking at the logs, I had -1 feedback from 3385 rpm - 3922 rpm, Dam dropped at 4k rpm to .75 by 4300 rpm it rose to .87 and by 4600 it was back to 1. I’m stumped 🤔 . Did a second wot pull 5 min later and dam stayed at 1 .

Smeedia I’m lost in figure out this 05 wrx got a -11.14 feedback knock but I’m not hearing any knocking or noise to the motor. My DAM is been at 0. Not sure what my issue is… lose of power? Boost issues?. I did swap the motor from a 02 WRX with 100,000. I did swap a stage 4 act clutch into the 05 WRX for my Dragway Track gains. But these dam and knock reads are scary causing power loss…

Any chance a bumpy road can cause knock readings?

Im getting Knock sensor error on 2004 Blob eye Impreza GG GX non turbo at random times and goes away then randomly comes on again and goes away and Subaru wants $280 just for the part, is it the sensor or the car its bone stock only air box was removes with a more easier breathable hose that accesses cold air but then light came on before this mod and the car runs better with it? Any suggestions or should i replace the part? It is just my run around car and when i decide to take my dog to the beach and have to use it for very mild off road as it has LOW range and High range gear lever which is handy for the sand. Also still loving the channel! If you have PO Box and need any JDM parts let us know as its so easy to source here in Australia and your dollar value is worth double also with Process west parts as its Aussie made but expensive in my dollar. Saving for some Mishimotto stuff for my Sexy Rexy and getting the plates SIKMRX

one of the FEW real ones round here in the subie community lol 👀👀

My DAM is at 0.312 but my feedback knock is at 0.00. I did put new fuel in the car. I usually go to Shell. Is this a problem? Or is this sort of normal or nothing to worry too much about? The DAM used to be at 1.000

Love the video! Quick question, I have a 2020 sti 8k miles just recently put a AP and knock was close to non existent and dam was at 1. A week ago took it on a drive through the canyons and noticed some knock. It did go as high as 4.20 once but it stayed close 1.20-2.18 most of the time. dam dropped to .812. I did mix fuel brands right before the canyon run(both still 91). Now it’s been a week and knock is normal with high being 1.20, but my dam is still at .812. Should I be worried? Thanks! Forgot to mention car is stock.

I'm confused on mine as my DAM drops to 0 and knock feedback is still 0.00 but my feedback knock learn is like -11 and starts to cut out. Cant figure it out definitely need help

My dam is currently at 0.875 with 0 knock I’m just freaking out because I’ve always been on 1 for my dam. I just put on the stage 1 plus redline are my readings okay?

Hey there, I commented on one of your other videos about what I should do with my car because I had both cats clogged up. I ended up getting a Cobb SF intake with an airbox, a turbo XF 3 inch catted downpipe, and I’m running a stage 2+93 octane off-the-shelf tune. (2011 wrx) I got a reading of -4.2 feedback knock along with -2.8 fine knock learn, and .7 DAM. I reset the ECU, did a few pulls, and all I got was the same feedback knock but my DAM did not move FROM 1.000. Is my car okay? Should I be concerned? What should I do?

How about having a 2.5 built engine forg, piston, titani, valves, spring ext. But you have a wrx ecu could that cost miss reads?

Sorry to comment on a old video. I recently installed the iAG v3 AOS on my 20 sti and I’ve noticed that the supplied bottom oil drain hose clamp has come undone and is leaking a little oil. Could this cause the -11.7° feedback knock and 0.000 DAM I am seeing? May I add the car has less than 20k miles and the only mods are ETS mid-pipe, faction fab axle back, Cobb SF intake, Cobb AP w/s1+ ots, and the iAG AOS. 😬😬 I’ll be doing a compression test, wish me luck 😢😅

What about a 15wrx no dam drop no fkl just fbk but only when im going into boost -1.41,2.81 and even some -3 or -4 from time to time

Just put in a cobb downpipe flashed the stage 2 OTS map from cobb, dam has dropped to .938 since and I'll get feedback knock learn up to .39 when on throttle. Gas is good, spark plugs were changed recently

My dam is constantly at 0.00 and my feedback knock occasionally goes down to -1.4 is that something I need to worry about? Thanks

Hey man great video! Just wanted to get your take on my situation! I’ve got an 06 Wrx with about 215k miles with stage 2 OTS tune very random feedback knock DAM never drops only once have I ever seen it drop, however almost every drive I’m seeing numbers between the common -1.28-4.8 and -7 somewhat frequently even on the freeway at constant speeds? Anything you would recommend to troubleshoot besides an etune? Thanks again man for the great video breakdown!

I FINALLY GOT A NEW BLOBEYE LAST WEEK SPUN A BEARING 🤣🤣🤣 love subarus

my dam has dropped below 1 to around 750-850. my knock learnn was at around 3.5 feedback knock was about 1.4 is that normal?

My DAM is at .688 I fill up on 93 and you think I might need a octane booster my feed back knock is fine and when I hit the gas my throttle and acceleration has no feedback too my af senor read 16-17 at idle this only happened once

My dam is jumping around but the knock ain't. The A/F ratios are jumping around a lot too. New maf didn't help. No boost leaks I can find. But also no CEL. Thinking it's the upstream O2 sensor

My 2005 wrx has been fine for months since I locked in the current tune, last couple weeks it's randomly going from 16 DAM to 0 and back again and all numbers between... and doing this even just at cruise on the highway. This morning I heard something odd, sounded like knock, I had hood open as I'd checked fluids this morning before starting. Thing is the knock isn't constant, and I swear it sounded like it was from the AC compressor. Has anyone here had false knock from a potentially failing AC compressor? It's still cooling, but seems to be less so, even after checking charge. It's the only thing I can point at currently, it's a knocking noise that isn't constant, the ecu keeps pulling then adding back the DAM value, sometimes it's brief that it kills the DAM, sometimes it's almost a an hour at a time...(I have a long commute and I daily this car)

How about occasional -4.20 that learns away almost instantly Dam never drops... happened while cruising. Any thoughts?

AnxietyPorts! haha I feel that!

This video has been very helpful! I'm going through a weird issue with my 2021 WRX right now though, where I see -2.11 fine knock learn consistently at 0-5 psi of boost but no feedback knock, and yet my DAM still drops. I'm on a stage 1 e-tune and my only performance mod is a Cobb BigSF intake. This has been happening for the last couple days regardless of the time of day or ambient temperature, so I know it's not related to the stock intercooler heat soak. I'm also pretty low mileage at 28k miles, and I got my spark plugs changed at 20k miles, so I think something else is going on. Any help would be appreciated!

I know this as old video. but my Subaru has an occasional what sounds like knock. but im not seeing any feedback knock at all. and DAM is steady at 1. the sound is intermittent and doesn't increase with RPM. TF any helpers?

I've been getting fbk constantly under about 7% throttle every time I drive going up to a peak of -3.52 and yesterday my dam dropped as well to .750 I reflashed my ecu (running SF intake and just put on a boomba bpv) on just sf map and the dam was fine until tonight it dropped for only like 2 minutes while driving to .875. Makes me not want to drive my subie any e-tuners you recommend?

What if I get a slight DAM drop without knock? Happened last night on my drive home, dropped to .875 eventually recovering to .938 before I got home, then today finally recovered fully to 1.000. Just refueled so bad gas? I used Kirkland 93 octane which I’ve never had issues with before and I’m pro tuned.

📣📣❗❗ATTENTION 📣❗ WRX HAS COMMON clutch throw out bearing that always is making noise even after 15th replacement, which might be the noise the throw out bearing is making the DAM drop and the knock sensor pick of Fine learn knock and feedback knock ❗❗

question I have a 2020 wrx base model with Cobb cold air intake and the box with a invidia exhaust. Have a brand new motor with just over 1,000 miles on it. I put everything back on and on my way home I got a feedback knock of -2.81 and it seemed like it was only doing it at lower RPMS like going from a stop. Any concern? DAM is still at 1.000 and fine knock didn’t move either and is at 0.00 please help

My car sometimes at idle likes to jerk a little bit, I put fuel system cleaner inside and it seemed to help. Could this be dirty intake valves?

my dam drops to 0 and my knock is at -11.75. (2018 STI) stage 1+sf 93oct. is my motor shot? no cel

Hey Smeedia I appreciate the info it's very useful although I do have one concern not sure if it's something to worry about but when watching feedback knock and fine knock learn I do get a consistent reading of -1.40 to -2.80 for knock feed back same for learn but today the learn feedback went up to -3.15 and that's consistent with going over 10psi I'm sure it's not much to worry about but it's strange to me that these numbers are consistent on every drive. I have a 2020 sti with 4600 miles and tomei exhaust just running the stage 0 v400 ots map from cobb. is there anything to be worried about?

f I get dam and knock usually it's time for an oil change and that usually clears it up for me.

2011 wrx stage 1+ with the Cobb intake, 91 octane tune but running 93 in car. Dam stays at 1 and fine knock learn stays at 0. Feed back knock just about every time I drive it goes above 2.8 (usually around 5-8) and has went to 11. No code for the knock sensor being bad or faulty. Thoughts?

Do you know by chance if I should be worried about low FBK & FKL with forged pistons? I think I got a bad tank of gas last week and my DAM dropped to 0.875 so I reset the ECU after getting new gas and my DAM now seems to be fine but I've been paranoid about my FBK and FKL ever since that DAM drop. I've been keeping an eye on the numbers and I've been getting down to -2.00 kind of randomly (none of which happen during WOT though). My engine has weisco forged pistons so I'm wondering if I should even worry about those knock numbers or not. TIA!

Hey so I recently had a OTS Cobb stage 1 tune on 91 I fueled up at Costco and I was pulling on the freeway and I noticed my damn dropped to the .750s and now it’s permanently at .688 but when going to long drive the damn jumps back up to 1.00 but as soon as the car is turned off it’s back to 0.688 and I uninstalled the mod map and I’m running a stage 0 map just to have the access port installed on the car mind your it’s a brand new 2021 wrx

I’m running stage 1+ Cobb and in the process of going back an forth with ambottuning to get me a tune set up. Sometime I get 1.4-2.4 feedback knock. Dam stays at 1.00

What do you think of ots tunes? Dam is dropping significantly with an ots stage 2+ tune. Should I consider a pro tune for a more individualized tune? Also, when you added your downpipe with the stock fuel system, did you have tune on the car at that point?

2020FA20 OTS Cobbstage 1+, Will your DAM fix itself over time if nothing is wrong?

I have a 2004 forester with a EJ257 with Cobb AP and several different mods all bolt one. It has been tuned and gone thru. I recently my DAM dropped to .875. My fine knock learn is going up too .75 under acceleration. Then I randomly get a knock feed back that goes up to -12.00. But runs fine sounds fine. Any input would be very much appreciated

Love the video! Subscribed! I noticed my feedback knock was above -2.8 once but my DAM stayed at 1 and feedback knock learn at 0. Should i be worried? I am on Cobb OTS stage 1 93 octane.

Went to a shell gas station today after a meet, all of a sudden when I hit the high way my dam drops from 1.0 to 0.062, never again am I getting there gas.