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      07-06-2009, 11:52 AM   #7
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Drives: '09 Cpe Silverstone FR 6MT
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Location: Colorado

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2009 M3  [4.00]
The magnesium and aluminum parts in the fuel system would need to be changed to stainless or something that won't be corroded and you'd need larger injectors and ECU/VANOs adjustments to take advantage of the higher octane & large change in AFR.

Why not just try 100-octane no lead, low ethanol? In California it gives about 30+ more hp.

dcstep is online now   United_States
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