Quote:
Originally Posted by mikem
What is the stock compression on the N54 Tony and how much boost can you run without needing helpers to avoid detonation? I remember reading that Alpina lowered the compression with their pistons but I guess they have to avoid warranty claims from people who might run low octane fuel.
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Alpina do not use the OEM pistons but install forged pistons from Mahle, which allows them to lower compression without sacrificing power output. Those pistons are rather expensive, though, I got a quote on them for around 2000 EUR.
Alpina_B3_Lux
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Audi R8 LMX, BMW M550i xDrive (G30 LCI); gone: Alpina B3 3,3 (E46), BMW 335i, Audi R8 V10 manual, Audi R8 V10, BMW M235i, BMW 550i F10