Running rich??

[sick GN]

My car has Alky, K&N, and an ATR 3" DP. It seems to be running rich. On the OTC it says rich and stays there just wondering if I can do anything to adjust it without having an adj. FPR.

Thanks

 

[kevans]

Add boost!

Kev

 

[sick GN]

It's running rich at idle though. Any more suggestions?? I'm pretty new to tuning these cars.

Thanks

 

[Dan Thompson]

Is there an exhaust lead before the o2 sensor?

Like a cracked DS header or a leaky crosover.

 

[WarpSpeed]

Definitely could be an exhaust leak, it makes the computer think it's lean. Could be a bad mafs too, or O2 sensor. Do you have a fairly new AC Delco O2 sensor?
Adjusting the fuel pressure, if you could, probably wouldn't change anything, except briefly.