Ok, since I put my S&S on, Ive been having some performance issues. When the motor is cold, or barely warm, when I floor it, it feels like its being restricted as it revs up, untill it hits 5,000 rpm, and then it pushes me back in the seat like it just freed up whatever was restricting it. Like a sudden power burst. Also, I'm having some wierd idleing. It will surge back and forth by about 200-300 rmp and sometimes stall if warm and I try to start it. My Check engine light came on afterwards, and it was because of the front O2 sensor. I replaced it with a new one, and was still having the same issues. So today I went to Advance, and scanned it. Here is what it brought up from the history (my SES light came on again the other day and then went out recently, so I figured something would be stored in the memory) This is a bit lengthy, but here goes......
History DTC P0135
O2 Sensor Heater Circuit Malfunction
(Bank 1 sensor 1)
MIL NOT REQUESTED
Since IGN NOT RUN
Since Clear P/F
Transient DTC P0172
System Too Rich
(Bank 1)
MIL NOT REQUESTED
Since IGN NOT RUN
Since Clear P/F
Transient DTC P0300
Random/Multiple
Cylinder
Misfire Detected
MIL NOT REQUESTED
Since IGN NOT RUN
Since Clear P/F
Transient DTC P0440
EVAP Emission
Control System
Malfunction
MIL NOT REQUESTED
Since IGN NOT RUN
Since Clear P/F
History DTC P0748
Press Cntrl Sol. A
Circuit Electrical
MIL NOT REQUESTED
Since IGN PASS
Since Clear P/F
Ok, So I have since S&S put on new plugs (stock number) new wires, and a new cat and new O2 sensor. I really feel that I should be getting more power than I am right now. I don't think my car is running right, although does not run bad as if something is extreemly wrong, just not as much power as it should have, I think for having Borla cat back, CAI, and S&S. I realize that this could also be in troubleshooting section, but I am ahving power issues since putting on the S&S and was hoping that someone could point me in the right direction. Theres a lot of codes that came up and I need to know where to begin, and what can be ignored. Thanks in advance!
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CAI - Borla Cat-back - S&S Headers - DHP - AFPR
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