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91 octane calibrations have a less aggressive ignition advance map to help compensate for lower octane fuel blends
the 0FG Exhaust will be on the top of your playlist
we offer two different options depending on your mounting location:
Stainless steel hardware included
AWE Straight Pipe Exhaust Audi R8 4.2L (2014-15) KF_w-~ 91 octane calibrations have aAWE Straight Pipe Exhaust Audi R8 4. 2L (2014 15) Do you find even our R8 4. 2L V8 SwitchPath Exhaust too docile? Maybe you need to meet the AWE R8 4. 2L Straight Pipe Exhaust. This system unlocks the same impressive power gains of 25 hp and 28 lb ft of torque as our SwitchPath Exhaust, but sheds even more weight over the stock exhaust system, for a total weight loss of 55 pounds because lighter is faster. Be warned, though. The sound from the