So ive been looking around, and reading for about an hour and Ive found many people saying the VAFC is worthless, that the ECU detunes the tune after a week or two.

My question, is that just for partial throttle tuning or WOT TUNING as well?

Basically what im wanting, is something small to tune with, lower the vtec slightly, and even up all my AFRs to get some extra power out of my bolt ons, and I dont care if the tune is only available at WOT, thats the only time I would want the extra power anyways.

So the VAFC seems perfectly fine in my book, and is much cheaper, and cheaper to tune, but if the ECU de-tunes the VAFC and basically makes it useless completley, over time, I dont want to bother with it at all, having to worry about resetting my ecu every week is nothing I want to do.

Will the VAFC keep its WOT tune for good? Or does the ECU relearn and override the WOT tune and render the VAFC useless over time? Once again, im just interested in WOT tuning, I dont care about the partial throttle tuning

Whats the real truth/answer to this question? Please dont post if you dont know for sure, I dont want to start another VAFC thread with a bunch of conflicting "information"

Thanks,
Chase

 

VAFCII is only good for WOT tuning and will hold the WOT tune. It is useless for partial throttle.

I've been running mine for about two years. It's a great, in-expensive way to tune. My tuner was able to tune the car for WOT in under an hour only costing me $100 in tuning time.

 

sweet! sounds good, thanks for the info

 

I agree with above.

For lowering VTEC thus yielding gains, smoothing out the AFR ratio mainly leaner and leaner up top its a good inexpensive device.

I'm 95% it wont learn over setting at WOT, the 5% unsure is the lookup tables and other sensors it uses and because Hondas have MAP sensors rather than MAF because MAP is a calculated value.

 

VAFC tuning is perfect for your application. A lot of people will tell you that it's a half assed tuning device and the only way to go is kPro, EMS, Greddy E-manage Ultimate. Those tuning platforms are great but really needs the mods to support the full ability of them. IE, cams, turbo, itb's. For bolt on's, VAFC is perfect, it will keep it's WOT tune and you can probably pick one up for a 1/10 of the cost of the other mentioned ECM's (except for GEMU).

I picked up 9 hp top end and up to 20 hp in other parts of the power band tuning my E/I/TP. Leaned out the fuel because it was pig rich beyond 6000 rpm (these are the spots I gained 15-20hp). Picked a VAFC2 for 225 shipped w/ frog harness.

 

I picked up 9 hp top end and up to 20 hp in other parts of the power band tuning my E/I/TP. Leaned out the fuel because it was pig rich beyond 6000 rpm (these are the spots I gained 15-20hp). Picked a VAFC2 for 225 shipped w/ frog harness.


Me too!

 

im excited now lol

 

i have some questions though.. sorry if you think its kinda stupid but on an otherwise stock car, (only mod=test pipe) do you think it still needs to be tuned on a vafc2?

 

from what ive heard, theres no hurt in tuning even a stock car, especially if its an 00-01, if yours is an 03 (your sig) you'll probably pick up a decent amount here and there, +a couple extra because of your tp

 

You don't NEED to, but you will get gains. Especially in the midrange. VAFCII will yields a very good HP/$ ratio.