I'm with ya on everything, but the equal length headers. I'll replace my engine, before I lose an ounce of that subbie rumble.🤣

Equal Length Headers + Cyl 4 Cooling Mod are a huge part of equalizing EGT across all cylinders. The Subaru EJ Knock Control System is strictly bias to Cylinder 4, as it runs 1.5 degrees of timing over over all cylinders. Essentially, Subaru's thought process is "If Cyl 4 isn't knocking, we're good." Timing is everything. It's how power is made. ELH and Cylinder 4 both contribute to a safe increase in timing, although Octane is the major contributor.

I've done hours of research, learning everything possible to add reliability to my track/street car. You've hit the mark on this one on every point. Oil and cooling are really the highlights. Don't forget a nice smooth tune and some one step colder plugs too ;)

Longevity is a big thing to keep in mind, specially when we do some mods.💪💪💪

Tanner dude I remember when this vid came out right when I bought my STi. You were my biggest resource leading up to and after buying it. Congrats on the success so far and I can’t wait to see you make it to the top!

I’ve watched this video a few years ago and I’ve installed Perrin AOS, cylinder 4 mod, Killer B oil pan +tube +tray plus other reliable mods. Still stock headers though😂 but this video helped me out then and after owning my 07 Hawkeye for three years, and still going, is still running smooth even after several Road trips from Washington state all the way down to Florida👌🏾

Love the IAG oil pan set. Cools the oil better, holds more oil, windage tray and baffles are nicely made. The pick up is a monster

You put out great content man! Always like when people discuss the technicals of these cars, and not just talking about their downpipe and catback for the hundredth time. Keep it up!

Before adding all kinds of power to your WRX or STI, get your supporting mods done first 💯 Dope video, subscribed!

Longevity is what I want for my practically stock WRX

I always get distracted looking at all the license plates in the back 😂

Just got my first subie. 2017 sti and all the info in these videos has been really helpful. Never done anything with a tuner. Was always a one carburetor is good let's get two guy. Getting my car as far as i can without swapping the rotating assembly. This is invaluable. Thanks so much.

I'm running IAG Oil components and I haven't noticed any issues with it. My local speed shop recommends them on all their Subie builds. They are the ones that did my IAG stage 2 shortblock too!

Just earlier was trying to find some information on the forums about reliability mods. And then here it is in one video. Love the content man 👍 very informative

Again brother great info on channel as always. Elh, aos,diff oil pan, tray and pickup tube,radiator all check. Next mod is dom mod 🤙🏽

Ever since I got the Cobb anxiety port about month ago. I have the common side effect of anxiety and paranoia now. just seeing how much knock feeb back I get. 1.40 2.40 3.00 5.00 7.00 now hit a new record 8.00! These numbers just pop up driving normal at random times and if I drive it hard too on my 2017 bone stock STi 🙃🙃 Did some research didn’t help me to well so many different opinions. But i do find it funny your timing on certain videos topic you make are on par with things I’m planing on doing or have concerns about at the moment.

By the Killer B Holy Header with there ceramic coating and buy a ceramic coated downpipe if you can. A downpipe with two ports so you can run a wideband sensor. You will be so happy you did in the future. Killer B’s most current design with the one piece collector sounds damn good.

This is a great video no one ever explains or suggest these parts at least not as much as you and all in one vid!!!! Good job hopefully some of these guys take this into consideration 👍🤛

I have a full invidia exhaust including a EL header on my sti and while it lost most of its rumble it sounds like a rally car. So I’m okay with it.

I have a Mishimoto CC and I just keep it drained all the time.. I drain it like once a week.. I Have it hidden in the wheel well, and I run a line down out of the bottom, so I can crack I open it just drains right out.. I drain it everyday in the winter.. You don't want to be sucking frozen sludge into you turbo, I did it.. LOL.. Took 2 days for the smoke to go away and I pulled everything apart mostly and cleaned it with break cleaner.. Everything is all good now..

Got this AOS mounted, thanks for the tips! This install wasn't terrible, but def requires your patience. The mount is great because it didn't interfere with my strut bar at all. If it hasn't been said already, def keep a magnet close by, and grab a friend during the AOS mounting (most challenging part in my opinion). Other than that, everything is tight and works like a champ. Thanks again on the video!

I have always loved the WRX/STi platform, and last year finally got my hands on a stock '08 WRX for $4k expecting to have to do a rebuild (random cylinder misfire). I pulled the engine and heads and the cylinder bores look great for 135k miles, so I think it just needs some head work. With the remaining budget for the car, I'm able to modify it just how I want it. So thank you for helping me build my Suby to endure some spirited driving through the mountains of California!

super informative. a lot of people don't know these things. This is why I like watching your vids.

Up here in Canada most shops DON'T recommend running an AOS - even the heated ones such as the Perrin or IAG. Unless of course you park your Subie for the winter(why???) There have been too many cases of the AOS freezing up and causing total engine destruction up here. It happens once you get below -20 deg.C

Great video! Although I would add an oil cooler upgrade and removing banjo bolt filters with screens.

Hey thanks for this video! I have a 2010 WRX with 124,xxx KM on it. engine started knocking the other day. I will be installing AOS, Oil kit and radiator at the same time I get my engine fixed.

sorry I didn't hear that third one over the sound of my rumble rumble

I really enjoy your format for recording your videos as well as the editing, keep it up !

Man, all of your videos are informative! Class in session when you post!

I had done all this in my wrx after I went stage 2 with flex fuel. Had some knock even on e85 and realized spark plugs needed to be changed. So I suggest changing them every 25-30,000 miles or so to also improve longevity.

Saved to my list of videos. I will do this to the bug eye once I put another engine in her

Great video as always 👍 Makes me treasure my Celica even more now 👏

This video is very underrated! Should be the #1 video to watch for people who drive their subbies hard.... If you daily your Subbie you can get away with just proper regular maintenance. But however if your oil pickup breaks you are fucked... Run an oil pressure gauge would protect you from this :) Also oil temp to properly drive it warm etc. And you missed talking about the heatsoaking of the top mount :) Either get a front mount or make sure you properly drive it cool after being stuck in traffic.

I love how your wrx is just fitting in your garage by hairlengths lol

Ron Davis has a rad for the Subi and they are the KINGS of Radiators. That is all they do is radiators..

There’s a caveat to the radiator statement. Larger radiator is actually only helpful if it adds passes, just getting a thicker radiator with the same number of passes is hurting efficiency. You could argue more capacity, but it’s more water that the air has to pass through so it’s actually restricting air flow. If it’s adding more passes then it improves efficiency. The main benefit would be going to aluminum vs plastic would be reliability and the aluminum insulating heat better.

I'd bump the radiator up the list if you live in the southwest. My ambient air thermometer today said 121dF and the car was struggling, coolant and oil temps were high and the intake manifold temps were getting up to 150-170dF while sitting in traffic. Time to upgrade the cooling system when the car starts to heat soak from normal driving.

The Verus engineering AOS is perfect. Friend has one on his 2016 WRX and I have one on my 04 WRX wagon.

I did all 5 of the mods from this video. Definitely worth it for the longevity of the car. I had a really hard time deciding between the 3 radiators though, MISHIMOTO VS KOYO VS CSF. Which one do you thinks is best?

Another good video. Congrats on10,000 subscribers. Thx for more FA20 stuff.

Great video. Did my AOS 2 weekends ago, it's a Cobb. Took about 2 hours, but killed my knees and back. The instructions Cobb provides online were very useful, once you figured out the perspective they were taking the pictures from. Next is probably going to be the killer b oil pan. Keep up the great work on the vids.

Cracked my radiator for my 06 WRX up at the top plastic part. Recently bought a Koyo Radiator, just waiting for it to be delivered. I would recommend a new radiator the older the car.

I’m actually looking at most of these parts for the my STI, especially the A/O separator

Awesome to see a successful WA content creator! Hopefully ill get to meet you at an event!

Some good recommendations there 👌. Whether you have an EJ or FA motor the AOS is a no brainer, went with IAG. A better exhaust header, specifically stainless is right up there too, the larger diameter makes the engine breath better. The one modification not on your list that both EJ and FA engines can benefit from is a Fluidampr harmonic crankshaft damper, especially if you are increasing WHP and torque. It is $$$ but a longevity extender. You may want to add it to your list!

Just picked up a used 2020 WRX and I’ve been going crazy researching reliability as I do know Subarus has a bad reputation in terms of blown engine. I stumbled on your channel and honestly I feel like all my worries is put at rest. I definitely want to add an AOS, killer b oil pickup pan. Any suggestions on more reliable parts? Or is killer b oil necessary? I’m probably at most, add an air intake and a cat back exhaust all of which will be pro tune. Awesome channel🤙🏻

I love your style of videos and you very knowledgeable! Thank you for sharing this information so noobs like us don’t blow our Subaru’s up ;) keep it up man!

Thank you for the video I ended up selling the impreza and bought an evo 9

I always run mine on 98 octane pump gas and a bottle of Nulon Octane booster with each tank full, which claims to raise the octane level by up to 7 points. I doubt that it does this with 98 but I still always run it for insurance. Another reason for broken ringlands is excessive timing, so maybe back off your timing a couple of degrees as well.

Some good things to know🤙🏾 think I need to make some purchases ha

I think I’ll do everything except the equal length headers. It does affect the sound of the exhaust. Gives a different rumble, I prefer the original rumble sound.

Thanks for making this type of videos 💪🏻

Keep up the great videos!! Super informative!

Hey man great video. I would also suggest upgrading the fuel system too. Damn crappy series system in the EJ’s. Cylinder 4 always gets the short end of the stick. u can lean it out and cause knocking.

Thanks for the great video. New to the Subie world and love the channel. Keep it up!

Love your content! I haven't started any real mods on my 16 WRX. Its my daily and I am worried about the reliability. Any suggestions on simple things I can do to keep it reliable and make the car a bit more fun?

First things going on the stock 03 bugeye I just bought will be the aos and the killer b oil pick up kit. Thanks for the video!

Stock wrx 2015-present with a fa20dit/fa24 engine has equal length headers.

20k miles on my HKS ELH, no problems here. Solid name brand and solid price.

IAG Oil Pickup is a solid piece like Killer B. Running the IAG Oil Pickup and Killer B Windage Tray on Stock oil pan for now. Depends on what brand you want to be loyal to 😝

Thanks for the knowledge you share, it helps a ton.

Thanx for the pro tips Smeedia. Will the Mishimoto radiator have enough clearance to the pullies and cooling fans? Or is there Mods or extra space needed in the engine bay? Also is a catch can any good whats the difference aren't they doing the same job accept one has cooling aspects? Sorry if noob question but educate me please. Cheers. Great content as usual.

Another good video brother. Have a good week and stay safe.

In your opinion, with a car like mine (stock STI down to the paper filter with 107k miles on it, well taken care of, unknown how much the previous owner pounded on it, but runs well, pulls hard, no engine oil burning, and no symptoms of oil/coolant fouling. Short of a compression test to confirm, which will get done soon, the car "seems" to be in perfect shape). And so far, the only mod I've done is an Accessport, and I'm running the Stage 1 ACN 91 map with Canadian 93 octane. 1. I plan to do the cylinder cooling mod ASAP! but how safe is to go for the occasional WOT run before this gets done? 2. Is it worth getting an AEM Dry filter to replace the stock paper filter? 3. I'm currently monitoring Coolant temp (highest its gone is 191f), feedback knock (highest it's done is -2.8, and usually only for the first second of hammering it hard on 2nd or 3rd gear), and DAM (has never gone below 1). Does that mean I am in a safe range to blast the car once in a while? 4. The ACN91 Map has 8psi on I-Drive, 14psi on S-Drive, and 17psi on S#. I am scared to try S#. Am I being paranoid? I'm tempted to try how it feels. What do you think? Awesome channel BTW, I'm soaking in all your great videos!

Awesome video. Going to spend this summer getting all of those installed. Then next summer, power mods. Also noob question. Would you need a tune for any of those?

Great video man keep up the great work I need to do some of these mods

when you do make the el header install, may you please record the sound from exhaust before and after and a few drive by before and after EL header installed. love the info!

I had a Crawford AOS, my shop basically refused to install... said they have seen multiple with cracks on interior welds. i got an IAG AOS now.

Great video and thank you for the knowledge! I’m completely new to any car mods and STI. Just got my 2021 STI 2 weeks ago. I’m wondering is it safe to a noob like me to install all these myself or it’s better to find a professional tune/install store to do this and learn more? Would these mods void the warranty or only something touches ECU void the warranty? Great thanks again for the video! And this is actually my first ever KZfaq comment after 10 yrs using it lol

What are your thoughts on the Baxter performance check valve system that helps get oil to the top end of the motor more quickly upon startup?

Bro i really like ur content on Scoobies....they are not only very useful for us owners but very variety and diverse as well. You're one of my favorite Scooby info to goto apart from general car reviewers like Jason EE.... But ive one BIG SUGGESTIONS to you....you might want to RE-THINK by making video OUTSIDE your garage x'DDD.....if you know what I mean xDDDD....it kinda gets 'dreary' alittle but...jus a tip tho...I like the dog alot myb he can go explore abit while you're at it xPP

I JUST ordered the IAG oil pickup kit, it comes with the pickup and baffle but im not sure about the pan. I'll have a review soon. Should be installed by next week. Also did the IAG (Cobb rebrand) AOS, and a perrin oil cooler. However, I'm getting a new turbo and went with the Tomei mx8265 and Tomei unequal headers and up pipe) BTW, also got the KEIN blast plate transmission thing and torque solutions trans mount and pitch stop. Plus a ton of other supporting mods and gauges (AFR Oil temp Oil press) it's gonna be a whole new beast.

I'm looking to mod my ej25 this is a handy vid

Hey fam what is the wheel set up? I love them so much

Subie 101 with Tanner, I know I keep saying it but, hands down best Subie channel on KZfaq. So how close are we with the oil experiment? 😎👍🏻👍🏻

Just got my next 4 mods planned out.

Great Vids, keep it up! On the oil pick up/windage tray/oil pan, sounded like you thought less important for certain years. I have a 13 sti hatch, did subie improve these at some point and lower risk? Obviously you are doing on 15+ so assume still an issue...just trying to prioritize the $. Thx brotha!

Looking at your White Rims makes me want white Rims on my white 2016 Sti, but all my buddies told not too 😭 White on white bad or something?

If you were to rank these like "what to get first", how would you rank these?

These all seem to void warranties too. Got 22 months left before I get a new turbo and engine. So I'll hold off

Do you recommend Perrin oil separator ?

Will I need a tune after installing an AOS?? I have a 18 Sti

Can the NA EJs run the Cylinder 4 cooling mod?

IAG came together with Cobb and helped them develop theirs. I run the cobb one.

How important is the radiator splash guard for the bottom of the engine bay

Can you do a "break in period" video? So much different information floating around regarding this.

ok let me ask this question.What if I do the same thats on your car with cooling minus you have mishimoto radiator and I have csf. So what if i put the oem pressure cap on radiator and use mishimoto cap on turbo tank. What is the bar pressure on the mishimoto cap ? Maybe that will fix my issue ? Ive been looking at the 1.3 bar STI caps but there almost 70 dollars and i dont want to spend that much on a cap to test if it will fix my cooling. Im just trying to find that happy meduim. And with a bigger radiator I just dont think that I shouid be seeing temps above 205 degrees.

How can it be reliable if you want to run after market Unequal length headers ie tomie UELH

Q: wheels... which one are they / what is size&offset Thanks

Hey Tanner i got a quick question. I just got a 2020 sti and i want to run the equal length headers and the larger radiator. Will i be needing a tune for these? Maybe an intake along the way also

That guy at the back stayed crouching the whole there 😆😆

Do you need a tune for equal length headers?

Bro wat are them rims u got on ur car they look good

A great video. So my base model 2020 STI comes with an unequal length header? I didn't know that.

Have the Killer Bee Holy Header for my 2018 sti it is so worth the money!!

Is it something to worry about if your car has been sitting for a long long while?. Oil separator.

You didn’t mention the engine oil cooler?

Just change your oil, use good gas, get a good stage 1 tune. Drive it like you don’t want it to blow pistons. Will be a good car. Oil pickup issue happens, super rarely

can i put an AOS on my 2003 wrx? if so which one would work best

Tanner, I gotta ask and I'm not insulting your knowledge or anything at all. Just purely curious, assuming the average Joe would stick with the stock turbo on their STI (I'm an FA owner btw) why would you run an ELH on a single scroll turbo even in regards to longevity?Just purely for knowledge, thanks man. ✌🏽