A few people have asked if it's possible to make the low-cam and high-cam VVT tunes "closer" together to get rid of that little dip in airfow, and the answer is yes! We could just make the tunes closer together in the VVL changeover area so the cams don't have to "catch up". We could also make a single VVT tune that takes the best of both graphs as well, which is totally fine! Many ways to tune a car! However, if I'm being honest, I just turned VVT off as I wasn't really seeing all that many gains, especially now that this car is supercharged. Glad you all are enjoying the video, and hopefully learning from it!

That was an awesome video to watch. I never thought of using the MAF as makeshift dyno! My jaw dropped at the amount of time you must have put into putting this video together. The quality really shows.

Great content, not overly simplified and still easily digestible 👍

As a Honda guy, it drives me up the wall when people say “Every car nowadays has VVT, VTEC is nothing different”. Great video by the way!

This is literally the best guide for tuning I’ve ever seen. It actually feels like I can go and tune my car

Love your videos, tuning content on youtube in a digestible format to a newbie is a rarity, and thats exactly what you provide. Thank you very much.

Dude that is the best explanation I’ve heard/seen of VTEC/VVT ever and I’ve been through training of this stuff in the past, you definitely have a gift my friend 👏🏼 👏🏼👏🏼

If you have the piston to valve clearance, you could try running the intake cams one tooth off on the belt. Not sure what kind of change in cam timing that would net, but with the small gains down low, and the bigger gains up high from the lower LSA, you may find some more free power up there. This is pure theory and something I've never considered, but looking at your graphs, it may benefit your particular setup. Great content! hope this channel blows up, love the work.

I don't think you understand how well this video was made, this is your masterpiece right here, easy to follow for those without much knowledge and those who ''know it all'', it's pretty much a tutorial for getting the max amount of power out of a stock-ish N/A engine even though it wasn't meant to be that :D Earned yourself a sub, awesome work buddy, keep it up

Wow I’ve had to endure some pretty complicated explanations around VVL and this one video knocked it out of the park! I’ve got a Primera that comes with Nissans version of VTEC (NEO-VVL) and the things I’ve learned (minus the timing, which isn’t applicable since Neo VVL doesn’t incorporate timing on the SR20VE) are things I’m gonna have to figure out when I go to get my car tuned later on this year, this video’s helped me gain a bit of confidence around making sure I get the most out of my engine. Definitely earned a subscription from me! Cheers from New Zealand 🇳🇿

“Probably means that your vtec tune is sh*t…” lmao, I felt that

first time seeing your channel pop up on my feed. I must say your content is amazing. you make things so easy to understand and answer our questions before we even ask them. you've definitely earned a sub from me 👍

Please change nothing about your channel. This is my new obsession. Easily my favorite car channel. This channel is going to take off. Don't change a thing.

You've made tuning my ecu seem a lot less intimidating, this was amazing!

Another banger video from blackthumb. Just when I think it can’t get better you do it again.

Such a clear explanation of how things work & methodology that takes into account every variable. Amazing work.

Dude! this is an eff'n awesome video. Straight, to the point, clearly illustrated. Thanks.

That was the most I’ve ever learned in 1 KZfaq video… maybe more than I’ve learned in 10 years of wondering what both these things do! Awesome work, certainly subscribing. Also… do a raptor supercharger kit on the EZ30R!

Excellent explanation on how VVL and VVT work and how to tune for optimum power. Also it was quite amazing how much info you could pull from the MAF.

Now i really get to see wat changes vvt n vtec does to the engine and what tuners were lookin for on their laptop. 22mins of explanation dats clear as day. Sub!

Love the way you teach everything, the driving process and the graphing data makes it better to understand

You are fast becoming one of my favourite channels on here, I'll have to try make my fb25 manual slightly less horrible down low, it feels like it's tuned from factory for a CVT, I definitely think it can be smoothed out at minimum.

Sir, you just earned another subscriber. I would say that you deserve even more. Great explanation! Simple and easy to understand. 👏🏻

It would be even wheezier than usual. Thanks for coming to my ted talk.

Amazing work. You definitely need more views, all the videos on this channel are great for that matter

Glad i discovered this channel. Great content. You present it in a way you can just listen if needed. Great work

I love the graphs. Love the “whaaa” noise you make during the pulls. It gives Richard Holdener vibes

The first few seconds of engine idle had me crying almost no a mindgasm I had a mindgasm oh my God Honda I love you

You my man are making the biggest fucking difference in me trying to learn tuning

Best breakdown of the two i have seen brotha ... much respect n you just got a new sub 🤘🏾

This might be the best video relating to airflow and tuning I’ve ever seen. Like I feel like I could go out and do some of this tuning myself… and have fun. Great video

Amazing video !!! Fav channel period.

I absolutely LOVE your content.

How do you have such a small amount of subscribers? I just came across your channel but you definitely deserve more. I’m sure you will be at 1 million subs in a year or so. 🔥😎💪🏼, you are very informal. Keep up the good work Homie.

Keep at it BlackThumb! Your a great deal of importance to the KZfaq car community even with a smaller following. Your style and wealth of knowledge is what TUNES us in. Your going to get big on the Tube soon enough! Collaborate if you can to get your bitchin channel out to the masses!!

Underrated channel right here.

Amazing video man, this is wildly insughtful. Thank you! Will binge watch your videos now

Awesome video man, you WILL blow up soon.

This is the exact video I was looking for. Nice one!

Thank God KZfaq put you in my suggestions list

Great video bro, thanks for making it very detailed with knowledge

These are great car videos. Great explanations dawg

Brilliant explanation on the AVCS (VTEC) behaviour! One thought, why not bring forward the cam advance slightly so the delay happens before the VTEC kicks in?

The algorithm sent me here, I finally understand VTEC thank you!

Great video bro, I subscribed as fast as vtec kicked in yo!

Less overlap equals less unburnt air/fuel going to the exhaust, so yes its an emissions thing but it also takes away from scavenging. Some engines like a lot of ford motors (I went thru a ford school) use the exhaust cam as an egr system by forcing some exhaust to stay in the chamber with cam timing. You can turn the vvt into a performance setup by skipping a tooth on the intake cams so it has a lot more overlap for top end and using the tune to bring it back to factory 0 down low

This was a thing that came out in the late 90s it's called a killer cam, it deletes the smaller lobe from the cam only activating "vtec"

“Dragging a shovel down the driveway” great analogy! Lmao

Definitely can tell the effort put in this video. Thank you 🥹

Love this video! I've learned something and I'm clueless as well! Subscribed

bro you funny af i enjoyed this vid even though anybody else woulda made it boring lol

My tuner lowered VTEC engagement and yes the cross over was smoother and less pronounced this video brings me some joy knowing I'm probably picking up some hp even tho I'm losing the big cross over.

This video has 100% earned you my like and sub! This is absolutely amazing and brings a bit closer the magic the tuners do on the dyno. Would be amazing to see a series called 'Tuning your car for dummies 1-2-3' or something. I would 100% watch all of it and tune my own Mitsu Colt based on knowledge from you!

You’re a great teacher! Thanks for making videos and sharing your knowledge 👍

First video I've seen on this channel. Fantastic content and I love the hands on approach with the actual data. Subscribed!

Okkkkkay. Dude. Yes. Very imformative! Awsome work. Instant subscribe bruv 👌👌

That was so informative and quite digestible for an idiot like me. Thk you for this! Subscribed!

dear god man this was incredible to witness.. you explain things so clearly

Anything Honda or VTEC related is going to blow up (not the engine, your video) Good choice and content as always. Love it

Dude. I will TRAVEL to you just to take a beginners course on tuning. The way you explain is SO UNDERSTANDABLE.

Subbed and liked my man. Great informative no bs video. Thanks you

Awesome information, and brought in an understandable way. Epic video❤

From one small yt to another. Good shit, keep it up

If VTEC was always on there would be no wait for the VTEC to kick in

As a fellow avid enthusiast, I truly appreciate the amount of information provided in this video.

Really great video! Love all the logged and dissected info that all worked out as planned too! Advancing the intake cam down low tends to show a nice benefit with turbo setups if they are already at a favorable emap/map ratio and the extra overlap lets the engine sort of "get out of the way" for generating more airflow and driving the turbo into boost sooner. Helpful particularly with an auto car when stalling up. Back to "normal" up top of course if possible to avoid the hit in power there. You're not only changing the LSA and overlap but the trapped volume in the cylinder (sometimes advance helping a longer duration cam not lose as much static compression) and then retarding will allow more time at high rpm for a more complete cylinder fill as the air lags behind a bit but has more inertia near the end of the stroke.

Subscribed cuz of this video, first one I’ve seen from you too! Make more videos like this G

Excellent analysis and explanatuion! Ive learned something, thank you!

Blackthumb got my thumb up. Channel is so underrated.

This was so cool to watch!!! Inspirational lol. *opens EcuFlash for my SJ Forester*

This was just recommended to me this morning for the sake of the algorithm I figured I would let you know lol. Very interesting video my man, I subbed and shared with all my buddies. Cheers!

Brother I just found you and I watched the whole video and immediately subbed. Awesome, clear and very informative video

Love your work. Very well done

amazing content dude👏🏼👏🏼

This was a fantastic video, and made tuning seem a little more simpler. I thanks you sir. Also VTEC on a Boxer engine is bad ass. As a Honda enjoyer, it's really cool. Not mad at all.

That was awesome. So helpful.

Great video as always. Thanks for the content!

Quality Content 👍👍👍 You just gained another subscriber!

amazing content, really appreciate you helping me learn

I like to listen to you speak. Good vid as usual.

That's awesome content. Explain actually everything. Great job 💪

This is amazing content!

I watched several of your videos you are incredibly intelligent and straight to the point and it is what I like I'm a intj I think you are the same. I am the same way or I used to be sometimes you might have to practice with called extroverted feeling and basically it means trying to be nice when you know you don't have to be. Unfortunately it will change your perspective and you can't go back to the way you are right now so do it or don't I like the way I am now but I can always turn on the other side and scare everybody in the room if I want to

Subbed. Reminds me of my old 01 Legacy GT wagon, man, the primitive shit we used to have to do then versus now. I remember when the rs25 guys and I-speed launched an ecu swap in like 2006 and the pinouts didn't match, one was a Unisia Jecs and the other was a Denso ECU I think... (I did have two moonroofs and a factory rear lsd which the same era impreza rs didn't, lol)

well done man. blew my mind when you said you made your own program just for the graphs of this video lol

Really love all of this, while I knew everything that you said(spot on btw) it’s really dope to see it in action, just like using a Dyno to see power increase from changes being made. I love tuning for this exact reason and watching gave me the same feeling I get when I tune a car on the Dyno haha I loved it!!!!

I’d like to see a video like this regarding the MAF, but with a turbo and boost added to the tuning aspect, and how boost affects AVLS/AVCS.

Great video I am a new subscriber and your videos are fire the way u explained it every details set by step

This man needs a dyno, I’d love to have my crosstrek tuned by you!! Edit: Subscribed

High quality content here. Subbed

yo dude just found the channel today and I love it thank you for the information and definitely will be using the tuning methods on my minis. there just isn't a lot of support for the r50s (by this I mean they just say to buy a r53) and the explaining u do really helps me with ways I could make my own parts or power.

I dont know how i came by your blower maker video ... But im in shock how easy to process information you are presenting . I love your kind of satiric presentation ❤

Fun fact, 3 manufacturer share the same sort of VVL system, Subaru, Porsche and Proton.

Gosh I love learning

Great video!!! You do a great job explaining each change and the results. You gained a subscriber 👍

This video is brilliant.

Already you are twisting my arm here but I’m gonna go ahead and subscribe

Back in my day 16 years ago we would hook a switch to the vtec solenoid and it would make the car run like ass but it sounded lopey. It’s not meant to run well at low speed lol. I have a cammed LS now and even then you loose low speed performance but gain it higher through the rpm’s for sure. Airflow is a science and if you wanna get funky check out the d15b with 3 stage vtec. I bought one of those motors from Steve at hmotor to experiment with it in an ef hatch. The 3 stage vtec was an attempt to master the airflow at all rpm’s.

vtec is vvt_L is variable valve timing which controls the duration of the intake and exhaust valves in response to throttle to deliver more accurate power and lower fuel use in low throttle input. the L aspects stands for Lift and further increases the effectiveness of vvt by being able to alter the valve lift to physically allow for even more air to enter in and out of the combustion chambers with an added increase in fuel which is regulated by the ecu in response to the increased air flow. This creates even more power than just vvt at a high throttle input and better fuel economy at low throttle input. Ingenious system that can make small displacement car produce adequate and accurate power and further increase in lower fuel use. Really important system in automotive engineering and is responsible for the cars we know today.

Great job and second video I just watched. First was the running the car just on e. Just became a subscriber, keep up doing the great work 🫡