K-Series VTC Tuning Comparison

Tuning by Nick
Toronto, Ontario, Canada
[e-mail]
Dynojet 224xLC Load Control Dyno Tuning
2008 Honda Civic Si Project Car
K20Z3 Internally Stock Engine
K-Tuned 3.5" Cold Air Intake
K-Tuned Stainless Steel Header
K-Tuned 3" Cat Back Exhaust
Hondata Flashpro

[@steeebun6298]

self tuned my fg2 thanks to nick. Knowledge from your vids is 10/10

[@brianjewell4139]

This is a topic that a LOT of people claim to understand, and to be nice.... They dont. Looking at your area under the curve (and even up top!) it's like you went from a K20 to a K24 just by getting the VTC dialed lol. I like working from 50, then 40, etc etc then look at both fueling and timing for each VS. The shortcut "edit all tables" method. . Its cool to see how you do it and the clearly superior results.. Nice video!!

[@WilliamMUGEN]

Quality content for true tuning enthusiasts. Thanks Nick!

[@Fa5_4_lyfe]

For real man no one wants to spread the knowledge it seems like

[@jackkrupka3024]

This was a huge help for me tuning my 8th gen! Thank you!

[@ka5r215]

Wow!! Nick is spoiling us. Back to back in-depth tuning vids ❤️❤️

[@rhb47150]

Man this would be awesome if you would do this same results on a stock k24a2 with 50ﾟVTC

[@MrDelsoleg11]

I think he has look at his other vids. I think its in a video of a k24 swapped civic.

[@chelek20godoy93]

Thanks Nick 🙏🏻 10/10

[@yosh_tuned]

Good information. Great to see the overlap differences at certain RPMs.

[@aksakalercan]

Thank you for the successful simple expression. You reinforced the subject.

[@mecpello787]

The best vtc video I have ever seen. Thanks Nick!

[@BunnyBUNGALO]

Im tuning my si right now and this videos a big help

[@CYRRYANC97]

Jeez man this guy is awesome, I wanna bring my 400km 8th gen to him lol

[@mecpello787]

The best vtc explanation video ever! Thanks for the help!

[@HandicapRacer]

Knowledge at your expense.... Thank you!!!

[@yangsa8260]

Great vid and very descriptive. Not sure why theres not alot of views yet

[@FG2-K24A]

Thanks for sharing this info! Enjoying the 8th gen videos 👍👍

[@wav3yr520]

Another great and informative video thank you! Now I'm interested to know what cam angles you used on my car throughout the rpm range

[@RACEALOTGARAGE]

A video VTC tuning on boosted applications would be cool. I hear the usuall NA angles dont work as well for turbocharged setups

[@RolanTHUNDER]

Thanks for the insight an tips Nick!

[@ericmohotoo8326]

Great video man!!

[@tsx-itimjustlivinglife366]

Much appreciated nick👌🏾

[@salimsopari]

thank you for making this video

[@chibba5418]

Great video. 2 things tho. 1. Were all the runs taken on the same tables? Each VTC angle (by 10 or 15 degree increments) has its own ignition and fuel tables, so it may not be a fair comparison if the 40 degree vtc is running advanced tables vs the 10 degree running more retarded tables. 2. Wish you'd've done a 0 degree run. Usually shows better results than the 10 degree across the table

[@tonyross7376]

Thanks nick

[@ivtec4fun55]

This was awesome!

[@tsx-itimjustlivinglife366]

Respect nick mad props

[@vtecminileon]

So helpful. Thank you man seriously

[@tuningbynick]

Happy to help!

[@neverhobbyfree]

Love the video and the channel! I was wondering if any power is had if VTC is allowed to run the full 50 degrees? Thank you so much for sharing your tuning knowledge and experience.

[@findtherightbeat]

Nice tune, very smooth

[@Edge5055]

Awesome video!!! Just seems there is no way to adjust your VTC power correctly without a dyno. I steer tune my car and have to rely on Hondata’s reflash for the VTC angles. Wish I had a dyno.

[@Ksw-wg8nx]

Locking in each cam angle, tuning the afr, then comparing the fuel curve of each angle will give you a decent idea when street tuning and no access to the dyno

[@anrichlucas9425]

Awesome stuff. Have you done anything similar for K24A JDM with similar mods on stock 25 degree gear?

[@woznaldo]

That was super interesting. Excuse my ignorance here but is VTEC an on/off deal or can it be varied?

[@MrBonderd]

Would tapering further after 20’degrees to 10 degrees help get a little more top end out. It seems when you ran 10 degrees it held the end better just did not have the ramp effect of earlier aggressive vtc angle

[@bobbydelamar606]

So I'll need a tune after I install this my 1989 CRX K24A2? I have Hondata.

[@JeLifeCoach]

Really cool video.Very informative. Thank you for sharing this with us. What are the OE VTC ranges Honda uses for the SI? Do you think they pull back for reliability of engine?

[@slap2870]

So what we changing Vtc 45• for we’re losing on everything you sure you know how to tune?

[@JTHuntsman]

Do you hold ignition timing constant between the VTC angles? I know each angle has a different ignition table. So that would affect power. In order to do A to B vtc wise do you make them all the same?

[@the_JDM_fanatic]

What would happen with 0 degrees or no vtc to the power output?

[@dustylittle9584]

Think tuning my 2015 CRV Earth Dreams would be possible? Don't want crazy power, just a little more. Stock is 185 hp, 181 tq. Would be great to see 250.

[@JCnordic2983]

What was your original blend with the red line

[@ahkau4612]

Thanks. But only WOT? How about cruise to mild acceleration?

[@NickEnglishPhotography1]

Nick, would you mind giving some advice on ignition timing and knock limit, for example I notice the K20ITR basemap on hondata K manager runs really aggressive timing under WOT on the high cam, 34 degrees in the midrange. While my car seems happy with this, I wonder if there's any real benefit in running such advanced timing? Would it be significantly different with say 24 degrees from 5000-8000rpm than 34 degrees? I'm assuming this engine (k20A) cannot be knock limited otherwise it would almost certainly be getting knock count with these settings? Interesting also how up top from 7500+ mine only seems to want 28-24 degrees tapering off to 8600rpm, any higher and it will report knock count..... Whereas on the hondata basemap it suggests 32 degrees up top, but my particular car doesn't seem to like this

[@carlnichols9970]

Are there noticable, in person sound changes between each VCT degree adjustment???

[@uchiha_d1334]

Thank you

[@dailyz5876]

Is Canada open yet I’m ready to get tuned by nick lol

[@tuningbynick]

sadly the border is still closed - I myself want to travel to the US but cant

[@8300rpmallday]

When you do a run per each cam angle timing and fuel would need to be adjusted as well to get the most potential of each cam angle?

[@mariopic]

nick where can i book to get my k24 hybrid awd element tuned

[@tuningbynick]

send me an email and id be happy to book you in - [e-mail]

[@mondecruel1866]

Can you take advantage of vtc to help pass pollution test ? In my country they hold rpm beetween 2000 and 3000, if you put 50 degree there would it help for exemple ?

[@PaChiLa_Leader]

👍 nice

[@noblewon3507]

Hi do u still tune EFI cars still on hondata? Also is this the k20 or k24 in the 8th gen?

[@chibba5418]

do you need tuning?

[@noblewon3507]

@@chibba5418 yep

[@fortunesk89]

Do you know how ecu controls the different angles with the vtc solenoid does it just use different duty cycles?

[@jayaskoo]

Hello Nick, How does it run in 45 vtc on stock cat?

[@karleekarlee2528]

its realy good video

[@SkyrexTM]

VTC only affects intake cam ? Or both exhaust and intake

[@tuningbynick]

On these engines, only the intake cam has VTC

[@akramdastager45]

Very interesting, what cams was used when this test was done?

[@jacks_Dc5]

Stock z3 cams

[@mart673g]

Hey Nick! Will the 50 degree VTC upgrade be an upgrade compared to performance without type r cams?

[@Esdru221]

Yes

[@MrDelsoleg11]

Any particular reason why you set vtec that high? From the looks of the graph it wants it lower. I know you know what your doing lol been following you for years I'm just wondering.

[@tuningbynick]

I didnt get to show it in the video, but i did try lower settings. This was the lowest that this particular setup/combination of parts allowed VTEC to engage without a loss in power at vtec engagement

[@Boifriend007]

Hey where in toronto are you located at?

[@CrAzY6tothe6]

Very berry nice

[@user-hh4hc2lt6e]

The change from 1:32 to 3:05

[@LLO3H]

can you etune my 9th gen si?

[@tuningbynick]

Im sure i can - shoot me an email and i would be happy to discuss - [e-mail]

[@PatilsNinad]

What can be the best cam angle setup for maximum power in non vtec if we want to keep the vtec engagement at factory setting (5800rpm)?

[@tuningbynick]

Each setup is slightly different - The only way to find that out is put the car on a dyno and sample the different VTCs

[@chibba5418]

General principal for power is you want to advance cam and ignition timing at vtec, in high cams (and VTC should go to highest immediately after you're in high cams), and you should start to taper off around ~1000-1500rpm after that on stock cams.

[@eldocilospina6091]

Maybe if you point on your graph while you talking people like me that it’s trying to learn understand thanks for your time and effort to teach us but when it comes to teach you need to go more deep into it

[@BulliKid]

What does vtc stand for?

[@Earl_VTEC]

VTC - Variable Timing Control. This is a mechanism attached to the end of the intake camshaft only which acts as a continuously variable cam gear - it automatically adjusts the overlap between the intake and exhaust cams, effectively allowing the engine to have the most ideal amount of valve overlap in all RPM ranges. VTC is active at all RPMs.

[@BulliKid]

@@Earl_VTEC thank you. What controls vtc

[@Erik-qg8wx]

@@BulliKid oil pressure within the engine and the VTC solenoid

[@funkyd04]

Why is there a dip at 5300?

[@andrews2k]

Vtec kicking in?

[@guesswho6020]

Do you e tune ?

[@brianjewell4139]

Yes. Email him [e-mail]

[@PeggyAbner-d3t]

Paxton Road

[@HelenMoore-o8e]

Walter Estate

[@peopleschampgarage7869]

What happens when VTC is pinned because of P2V? I have 14.5 compression on k24. 4P deleted VTC with their fixed cam gears when they degreed the engine.