Checked the codes on the car (03 Cobra) just out of curiosity and saw a P0148. No problems that I can tell. What would cause the code but exhibit no symptoms? Car has intake, exhaust, a VMP dyno tune, and a FPDM wire upgrade. All mods are at least 4 years old and I've never seen this code before. Some internet searching points to FPRS, but I pulled off the vacuum line and no gas smell/residue. Should I look at fuel pressure to see if its dipping under heavy loads?
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