Service Engine Soon Light

[masterdomain]

I have a NLP Tri-Phase Performance Module, JWT Pop Charger Z-Tube Intake, and Megan Exhaust installed on my 2004 G35 Sedan. Recently the service engine soon light came on and stay on. I took to AutoZone to have it scanned and the codes said IAT sensor circuit low and EVAP control system gross leak detected. Could this be from me changing brands of gas from Exxon to Chevron and the Module or Intake? Should I just have the codes erased to see if they come back?

[tollboothwilley]

Sounds like you have a big gas leak somewhere. Check to make sure gas cap is and is secure. Normally that only kicks a "small evap leak" though.

IAT sensor low = MAF. Might consider buying some CRC MAF cleaner at autozone and cleaning it. You can try clearing the codes, but they are likely to just come right back without reparations.