So here is the story we have been troubleshooting an evo viii of hell. He thing just doesn't want to run right. Number four cylinder keeps coming up black. All other plugs are clean. Sent my 1100 fic injectors to get clean just in case. Clean my fpr. Put stock ignition, swapped spark plugs. Swapped coils, injectors. Does anyone around know where else to look. It just seems odd that only one plug is coming out rich. The car drives like crap, sputters like crazy.

Gt35r
1100 fic
Skunk 2 fuel rail
Kelford 272
Rev 3 intake
Full blown 70mm throttle
Ets 4" intercooler
Spoolin up coils
Hyper sun ignition module
Deathwerks fuel pump
Full exhaust with dump tube
Right now just boosting 10 psi
Full intercooler piping
Spoolin up injector clips

Anyone that can help please enlighten me.

 

So car is tuned? only one cylinder runs rich?

 

Only one cylinder. The other three are coming out fine.