SolaraGuy.com

Aight guys I finally got my a/f ratio gauge so I've been doing some tuning. I fond that under boost I was running really rich, so I got that straight and am running right around 12.2/1 under boost. but when ever I let off the gas the gauge show that I'm running extremely lean. It doesn't matter if I'm coming out of boost or not, it does the same thing during normal driving. At idle I'm right around 14.2-14.6/1. Any ideas on what the problem could be? Any ideas would be greatly appreciated.

does it go lean only when you get off the gas, or also when you are cruising?

your afr should go super lean when you are off the gas and there is no load, since the ecu was designed to save fuel for gas economy

It only goes lean when I let off the gas. While cruising its steady at 14.4/1.

then you're good, that's the way it's supposed to be!

The ecu cuts fuel on deceleration. Most cars do this.

Thanks for the info, its good to know that, thats not a problem.