Just VTEC engage point?

[xtnod]

I was just wondering, can I just get a ECU chipped to get a earlier VTEC engagement or would I need to do a lot more things to the engine?

[j.steimer04]

U would need a Vtec controller no matter what.

[92civic_hatch]

vtec is supposed to be used in high rpm's. making vtec engage earlier does not necessarily make your car faster, if thats your intent.

[97accordh22]

i would say get a apex vtech controller i have on my 97 accord with the h22 swap and i love it.. i have mine kick in at 5100 to 9200

hell for the right price u can buy mine and i will just get my computer reprogramed

[CapnToll]

With no supporting mods done to your motor, getting VTEC to engage earlier will mess up your powerband, and more than likely make it feel a good deal slower.

So don't worry about that now. What are you reallllly looking for?

[clayton]

Originally Posted by 97accordh22

i would say get a apex vtech controller i have on my 97 accord with the h22 swap and i love it.. i have mine kick in at 5100 to 9200

hell for the right price u can buy mine and i will just get my computer reprogramed

you have a vtech controller? where'd you get it?

[j.steimer04]

Long live the V-TECH

[xtnod]

I am not aiming for anything really lol. Was jsut a question I had out of the air.

But I guess since this thread is more popular I'll aks it here.

Anyone know how to tell what year a JDM engine is? They said the casting on the back...

all I saw was P30 and osme other numbers... I know P30 is a 92-95 ECU Unless I am wrong...

[98vtec]

Originally Posted by CapnToll

With no supporting mods done to your motor, getting VTEC to engage earlier will mess up your powerband, and more than likely make it feel a good deal slower.

So don't worry about that now. What are you reallllly looking for?

no necessarily. Vtec can usually be set lower on most the DOHC vtec models because vtec was a honda market. It's something they used to sell their cars. If vtec was perfect from the factory, you wouldnt be able to feel it. If you are selling a car for its vtec, you better let people feel that its there. So you set it a little higher so that the low cam power drops off, then the vtec cam switches over and creates a huge power increase. That drop in power from the low and and surge of power with the high cam is what you "feel". With fine tuned motors, you dont feel the engagement point because it is set at the low cams peak power which makes up for the discrepancy in power at the vtec crossover in stock form.

this is just the typical case tho. Not all cases. Different intake and exhaust modifications will change where vtec needs to be.

Beyond that, you dont want to just change the vtec crossover and not make the respectable changes in fuel and ignition (or just fuel if you dont have proper engine management)

[CapnToll]

Does this have anything to do with why the secondaries open up AFTER VTEC engages (which I just read; I had always thought the secondaries would open up Before VTEC so the better flow is already coming in when VTEC does engage)? Although I guess you'd lose a bit of power with that extra airflow when you're still on the smaller cam profile.