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  1. Catalytic Converters Fault Code

    A5 Performance & Mods
    Hey all, I have a 2010 A5 and I straight piped it like 2 months ago and my check engine light just came on. Took it to the shop and they said the fault code was coming from the catalytic converter. I then asked if straight piping could cause those faults and he said yes. He also mentioned a kit...
  2. 2011 Audi A5 Cylinder Misfire Issue

    A5 & S5 Topics
    I bought my Audi A5 convertible in June, 2011. Since then, the car has gone back to the Dealer for servicing 5 times all because of cylinder misfiring. The dealer stated that I overflowed the gas tank by not turning off the pump when it clicked off during filling. They cleaned out the...