Lowering VTEC
Joined: May 2004
Posts: 3,403
Likes: 6
From: DFW, TX
Originally Posted by versionJDM,Jan 4 2006, 11:16 PM
if you dont mind saying, you can pm me if you want, what AFR are tuned at? i am trying to find a good AFR to aim for. also, what kind of power are you putting down? thanks bro! 
I'm making about 225whp...I think my a/f ratio is around 13.5
Registered User
Joined: Oct 2004
Posts: 471
Likes: 0
Originally Posted by CIVICTOS2000,Jan 5 2006, 06:12 AM
I got mine lowered to 5800 with a VAFC-II on a DYNO and I gained like 15 WHP with my mods , and its good but I don't Understand Why you want to lower it so much? then you shouldn't have VTEC and just have a High rpm cam.....IMO ....Also by lowering it to 5800 I get a smoother VTEC engagement ....
D.
D.
Registered User
Joined: Oct 2002
Posts: 4,479
Likes: 1
From: Vortech Central
Originally Posted by RoaringVtec,Jan 5 2006, 10:25 AM
Once you change your Vtec engagement you'll have to change your fuel map from that Vtec rpm on correct?
Joined: Feb 2001
Posts: 4,061
Likes: 363
From: Redondo Beach
You need to get the thing tuned on a dyno and adjust VTEC accordingly. Some motors don't respond well to lowering VTEC, others do. Whatever the case, just do whatever gives you the most power.
There's nothing inherently dangerous about lowering the VTEC point, but it IS dangerous to use a VAFC without it being tuned specifically for your motor.
There's nothing inherently dangerous about lowering the VTEC point, but it IS dangerous to use a VAFC without it being tuned specifically for your motor.
Banned
Joined: Mar 2005
Posts: 2,976
Likes: 0
From: Santa Clara, California
Originally Posted by Moemers,Jan 5 2006, 11:15 AM
i installed the VAFC and set my VTEC to 5800...i have the 3 channel monitor reading Throttle, RPMS and VTEC engagement. problem is, the vtec doesnt say its engaging until 6200....what am i doing wrong?