Alright so I made a post about this before with no reply or any luck so I'm going to try again. I have a 1993 Mitsubishi 3000gt vr4. Its running rough and giving a CEL 25. I have replaced the ecu, maf, and the maf plug with no change or luck. Car doesn't run any better or any worse with it unplugged or plugged in. What other approach should I make to solve this issue? Also I have a SAFC that came with the car. It wasn't hooked up though and I don't know if it ever was. I do have a boost controller hooked up but I currently have no boost.