Russell, the LTFT are at +16-17% while in lean burn. When the switch is turned off, they go back down to +11%. This is about right since I am running 17 lb. EV6 injectors in place of stock 19 lb. EV1s (11.76% difference).
The STFT are maxed at +32% when in LB. As soon as the switch is turned off, the numbers crash down to -4% - +5%.
Quote:
Originally Posted by whatmaycome14
I think I'm missing the detailed information about what you're doing to achieve LB. I understand the idea of tricking the computer into thinking there is less air than actual going into the engine, but I don't read HOW you're doing this. How exactly are you "bleeding voltage off the MAF sensor?
|
I'll have to draw out a diagram tonight and upload it to be absolutely clear. I have a wire connected to the MAF signal wire going into the PCM. This wire runs to a switch that is connected to a penitometer. From the penitometer, a wire runs to a main ground. When the switch is on, it allows voltage to come through the penitometer, which "divides" the voltage. It takes some of the voltage and grounds it out, but sends the rest to the PCM. The PCM sees a low MAF voltage and reduces the amount of fuel injected.