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      03-18-2012, 10:54 AM   #11
pnosker
ti fan
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Drives: 2008 135i | 2008 535xiT
Join Date: Jan 2008
Location: NJ

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2008 BMW 135i  [5.00]
Octane booster can boost octane by up to 1-2 points max. You had way too low of an octane to run Map 7 (requires 100 octane) and 15 psi on map 6. You should have run map 1, 2, or 5. The car was likely pulling timing to save from detonation and lowering output.