RB20det running rich cruising??

[ryan15]

OK I have been fighting this problem for a while.Heres my sypmtoms, when I am cruising or idleing my afr`s are roughly 11.0 to 13.0 usually 12.0, under boost they are perfect like 10.8-11.5. The steps I have taken to fix this are:-Checked voltage of tps sweeps perfectly from .5 volts to like 4.5 if i remember-Cleaned my maf sensor-Checked the sweep on my ect sensor it seems to sweep fine from cold to operating temp.-Hooked up they narrow band output straight to the ecu from my wideband assuming the o2 sensor was bad-Checked for boost/vacuum leaks

I am not sure what could be wrong at this point its been like this since I got the swap running a few months ago, I just got my wideband in and wasnt shocked when I saw this, I get about 170-200 miles per tank which boils down to like 14-16mpg. I think it might be the connection for the ect to the ecu somehow. The efi harness does have to cut wires on it, they are random and next to the ACC, they are light blue and light green, I think these might be part of the problem. Ive pretty much ruled everything else out. The motor runs strong boosts great and is really smooth but I just need to figure this out, its running way to rich, like its stuck in closed loop mode.Ryan

[blues14]

Just drop 250 bucks on an SAFC2 and fix your probllem. It works great for minor tuning situations like that.

Are your running an aftermarket fuel pump?? FPR??