My car is running rich after i took out the intake manifold and exhaust manifold...it would start off at about 14.7 and slowly get richer until it gets to 10.0...Right now the car isn't logging any fuel trims at all not even the stft either...everything seems to be hooked up...I don't know what else it can be...any help would be appreciated

 

hi... do you know what was the problem???

I have the same problem with my car, but in my car everything seems to be fine, the idle is about 12:1, I have no STFT MTFT LTFT, all of them are on 0.0108%...

what can be?

 

too rich or to lean can cause this from what I have experienced.

 

Have you guys change roms IDs from what came stock? or 1 or both sensors O2 may be turned off in your periphery.