Just wondering about other peoples settings on their VAFC. Or what is a generally good set-up.

I think I'm leaned like 6% in the low end and then even out near v-tec. Just wondering if this is a good set-up a friend said he's richer like 1% or 2%?
Thanks

 

no one sharing their settings...

 

someone once told me that the vafc cannot richen fuel. Only lean it out. I got that from someone on this board. You need an fpr to richen the fuel and fine tune with vafc. By the way most people on this board will tell you not to lean out more tan 6%. Its a lil dangerous.

 

hey thanks.... I had someone tune it with a laptop and some diagnostic, but then I fiddled with it a bit. Just was looking to see what other people are doing...

 

unless you have a wideband o2 sensor with a data logger you need to have it tuned professionally and once its tuned DONT TOUCH IT

and yes the VAFC can add more fuel. if it couldnt it would be totally pointless.

 

Kamin... I'm not sure if the tuner had a wideband o2 sensor or data logger. I do know he hooked his laptop into the diagnostic connection near the fuse box. He had control of the ecu and all codes, and thats how it was tuned. The tuner is a professional he worked a some performance shop in PA (PES ?) I was just looking to see what some other peoples settings were.
Like v-tec engagement and such...
Thanks though.. I might richen her back up a tad though..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Grimm &raquo;</TD></TR><TR><TD CLASS="quote">no one sharing their settings... </TD></TR></TABLE>

Maybe because everyone's settings are drastically different according to different setups, years, and specific and unique engine properties?

Dyno tune it with an O2 sensor. That's how you do it right.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kamin &raquo;</TD></TR><TR><TD CLASS="quote">unless you have a wideband o2 sensor with a data logger you need to have it tuned professionally and once its tuned DONT TOUCH IT

and yes the VAFC can add more fuel. if it couldnt it would be totally pointless.</TD></TR></TABLE>

Correcto. If you don't know what you're doing when I wouldn't mess with settings of the V-AFC unless you've done research.

And yes, you can lean or richen the A/F ratios with a V-AFC. FPR adjusts the overall fuel PSI where as V-AFC you can tune the power band.

 

how can the vafc richen the a/f ration when you are at full throttle? yuo cant adjust the stock FPR to give you more fuel when its already working at its max. When you are at WOT, you are running the open loop maps of the ecu and there is no vacuum to control the output of the fpr at max. Thats why i think the guy is right about not being able to richen at WOT. You can however richen when you are in the narrow maps of the VAFC

 

I think I'll just leave it. I haven't run into the need to spend the money for a dyno run... maybe I should?