vtec controllor?

[emerica4601]

ok i once had a h22 lude and im now lookin at purchasing another one. i love the way the vtec screams at high rpm's. ok i understand how a vtec works and the science behind it.

so i see these ''vtec controllers'' from apexi and other company's .... what exactly do they do and waht kind of gains do u get from them?

thanks

[Zachp911]

The VTEC controllers just allow you to change the time VTEC engages either at a higher or lower RPM than stock. You wont really "gain" anything from them. Personally, I think they are waste of money, Honda has spent alot of time trying to find the perfect RPM for VTEC to engage at. I believe VTEC engages at 5100 RPM stock.

[emerica4601]

that makes sense. all the vtec really does is engage a pin which enables a different cam lobe to open and close the valves. and that is meant for hp in the high end than tq in the low end. i guess there wouldnt be any other rpm i'd want it to kick in than what it is stock .... makes sense to me

[honda_racing101]

Originally Posted by ludespeed501

The VTEC controllers just allow you to change the time VTEC engages either at a higher or lower RPM than stock. You wont really "gain" anything from them. Personally, I think they are waste of money, Honda has spent alot of time trying to find the perfect RPM for VTEC to engage at. I believe VTEC engages at 5100 RPM stock.

You defanetly stole that defanition from me. But yeah they are defanetly worthless. VTEC engages the best spot possible for a stock/slightly modded engine. Now, if you've rebuilt it and the engine car rev to 9k or close to it, then a VTEC controller might be a resonable idea. BTW, H22s VTEC engages at 5200 rpm to be exact.

[SiGNAL748]

Optimal VTEC engagement point is dependant upon cams. If you have stock cams, don't even bother.

[AcesHigh]

VAFC's help! Even stock engines can be tuned. Straight up VTEC controllers, however, are as worthless as they get.