Car was dyno tuned at Speed Inc last year by previous owner. Only thing he did was up the Fuel Pressure. I bought the car from him and it is running really Rich. I mean the car tears though gas and the exasht pipes are dirty. My question is would FP cause it to run rich? Bought a gauge yesterday and am going to bring it back down to Speed Inc levels. But I thought the MAF figured out lean/wide? Also picking up a Scanmaster this weekend to verify what Im thinking. Thoughts?

 

at first, it will run rich, but the CPU should have corrected itself over time.

 

That is what I was thinking. But its only been less than a 1000 miles so maybe it hasnt yet. ??????

 

i predict a re-program in your future

 

Considering that was like $400 I'm not happy.

 

check the fuel pressure regulator vacumn line. If there is fuel in it, replace the fuel pressure regulator. That was what was wrong with mine, and I had the same problems you had.

Q

 

Ill give it a shot. Thanks!

 

A leaky fuel injector will also cause a rich condition (failed smog on that one )