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How can I tell if my cars running lean?
- Thread starter mk6gti!
- Start date
steemax
Go Kart Champion
Yeah either VCDS, or the android torque app works too.
The higher the AFR the leaner you are. 14.7 (14.7 parts air to 1 part fuel) is stoich, or what your car should be achieving while idling.
Once under boost your AFR should be in the 10-12.5 range depending on your tune. Anything above 12 under boost I would consider lean. Anything below 10 I would consider extremely rich.
Butt posted from my Galaxy Note II
carsfeverguy
Go Kart Champion
What is the AFR code number for VCDS?
Chris@Revo USA
Go Kart Champion
My honest answer is you aren't going to. The way these ecus work it will prevent you from running lean. If the car deviates too far from the requested AF of the tuner it will pull boost, it will open the DV and finally just slam the throttle shut.
You have a wideband O2 sensor stock and the ecu can react faster then you can to looking at a gauge or a log to back out. Pretty much you wouldn't even get a chance to notice it was lean because the ecu would have already corrected it for you.
You have a wideband O2 sensor stock and the ecu can react faster then you can to looking at a gauge or a log to back out. Pretty much you wouldn't even get a chance to notice it was lean because the ecu would have already corrected it for you.
