i wanna get the VAFC to tell whetehr or not im running rich or lean will it do that or do i have to get the SAFC? also is vtec bad for turbo???

 

neither tell you that information

and vtec is quite nice on turbo cars

 

Your gonna need a a/f guage if you wanna see if your runnin rich or lean. Then you can try to tune it with your vafc.


Yager-

 

Anything that allows more power is better.

 

I had my VAFC before I put on my turbo and now use it with my turbo. Unfortunately, I have been told by several that the VAFC is nothing but problems for your car as far as the fuel applications.

The reason: VAFC does not switch from low to high fuel maps well. I don't completely understand why it does not, maybe there is somebody else here that can explain this a bit better. I will be disconnecting the VAFC from the MAP wire this week sometime, but I will keep the VTEC function actvated since I need my crossover up pretty high.

 

hmm, from everyones vafc hack... it seems the transition wouldnt matter because the settings are the same on hi and lo.... or am i mistaken?

 

as i understand it the problem is you're activating the VTEC solenoid and the ECU doesnt know about it. it switches fuel maps when it throws the VTEC signal. so just cause you moved the vtec switchover point higher to, say, 6000, the ECU moved over to the high fuel map back at 4400....

 

isn't that what th VTEC unmatch correction value is for?

 

It is to my understanding that it attempts to change fuel maps when you reach a certain throttle point. For instance, if I tell the computer that my Hi begins at 60% throttle position(Wide), it will switch to that fuel setting. The same goes for the Low, but I could be wrong. I'm still not having fun with the thing right now, because I believe its making me run a bit richer even at settings that appear on the screen to be leaner than stock.


[Modified by maxim, 5:19 PM 5/5/2002]