Mine does the same thing, I'm running vafc2. When I hit the gas it goes to like 12 and then to 14.7ish for partial throttle. When I let off, it jumps to rich again and then blank. Sometimes when I slowly give it gas it will stay lean around 17 for a split second and then even out.

Check your FPR or whatever else you have running your fuel.

Get the AEM wideband, I don't think just a gauge with a light is enough to keep track.

 

Who tuned your car Justen? I also think the wideband gauge would be a lot more accurate. We need to find you an EMS.

 

Who tuned your car Justen? I also think the wideband gauge would be a lot more accurate. We need to find you an EMS.

 

narrowband gauges are only reliable at stoicometric. Everywhere else they are inaccurate. Get a wideband if you want to tune using a gauge.

 

IT IS A WIDEBAND. Please. Intelligent responses only.

 

Idling and cruising the afr should be stoich (~14.7). When you get on the gas and boost starts to build, the AFRs should immediately jump into rich ~11-12.5 afr range, depending on how conservatively your tuner has tuned it.

Sounds like somethings not right with your tune or a fault with your wideband sensor maybe.

 

if you are using e-manage the Acceleration Map is what you need... "AM" is nothing more than a way to get rid of a sudden lean spike that may occur when you mash the throttle to the floor...


D.

 

If its not a wideband then its just a light show ur looking at.

 

^^ from 3 posts up "IT IS A WIDEBAND. Please. Intelligent responses only. " please read the entire thread.

 

can you elobrate a bit on your numbers, what rpm, throttle % and what AF reading. It could be your tune. I would say high 11s AF to 12 on pump would be ok at WOT...I would definitely not go above 12.2 for a long duration. On race gas you can stay at those levels for a longer period. Your AF should be reflective of your tune, thus dependent on boost, throttle readings. If you are running lean I would have the tune checked out immediately rather than risk any harm. As you mentioned outside WOT your car is running lean, then the interpolate might not have been properly done...from idle to WOT you should seen a gradual richening of the AF values...so from 14.7 to 11.9, per se...

while on the dyno, you might need to retune partial throttle. You can do this by mapping your cells to see where you need to add more fuel..also look careful on your fuel charts whereever vtec crossover occurs. The car will usually want to go lean since vtec changes will require additional fuel..good luck

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