ok guys i have an 88 coupe speed density 24# inj 255 walbro pump kirbin afpr and a iac bypass plate and no matter how much i lower the fuel pressure or adjust the bypass it still runs rich also i checked the codes and i only get the ones for the egr and emissions i removed ! i've also adjusted the tps from .970 to .700 and it helped alot and i can't get it to idle lower than 1100 with out dieing ! any advise is appreciated. also parts in sig