i was wondering at what RPM u usually kick VTEC, with turbo that is? i know all engines differ…but im sure u can give me an idea…thanks
Ive posted this on other thread, but here is the VTEC points again for civic/crx/integra, etc. (in Japan, not sure about U.S. probably similar)
EF9/8, EG2/6/9 and DA6/8, NA1/2(NSX) - 5800rpm
EG1/4/8, BB1/4(Prelude) - 4800rpm
DC2/DB8 tegs - 4400rpm
Get a VTEC controller if you want to change it. Field, DATA SYSTEM or SPOON. I use the spoon one because it comes with a factory look dial panel. I turn the dial all the way to the left to lower the vtec point to 2600rpm (not recommanded… car started knocking). Now I leave it on 4500rpm.
thanks…i know the spoon vtec controllers are great…and the others are good too.
i think i am gonna get the apexi v-afc…
but my question i guess wasnt so easy to understand…when u have a vtec controller,and u are turbo…where is a good point to kick vtec?
my friendwith a turbo prelude doesnt kick til like 5500-6000…and it seems to work best for him…
so higher is better, for a turbo car?
Using the APEXi VAFC, I have mine set for 5800 RPM. I’ve played with it a bit and have found the smoothest transition is at higher rpm’s. I ran it at 4800 and it seems like it was lagging a bit after it kicked in. A big factor will be on the cams your using, as well. I’m running stock B16 cams, once I swap my B18C cams in, my crossover may change. I’m hitting the dyno this weekend, we’ll see if it’s really better.
You really have to tune when you do a VTEC change. Most people I see with good Boost (Well tuned) setups hit VTEC somewhere in the 4k range, although I have seen some NA setups that push VTEC higher and rev higher. I will be keeping 4800 that’s what hondata defaults to for my ecu.
Originally posted by B17Vortech
Most people I see with good Boost (Well tuned) setups hit VTEC somewhere in the 4k range, although I have seen some NA setups that push VTEC higher and rev higher.
Really? Almost all the turbo/VTEC plots I’ve evers een have VTEC hit in the mid to late 5K’s, this is usually on stock cams, too. I agree that the best way to tune is on the dyno, however.
Originally posted by integracon
Using the APEXi VAFC, I have mine set for 5800 RPM. I’ve played with it a bit and have found the smoothest transition is at higher rpm’s. I ran it at 4800 and it seems like it was lagging a bit after it kicked in. A big factor will be on the cams your using, as well. I’m running stock B16 cams, once I swap my B18C cams in, my crossover may change. I’m hitting the dyno this weekend, we’ll see if it’s really better.
thanks man…thats kinda what i have heard…but i wanted to see what u turbo guys thought…so thanks again:p