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Old 04-27-2008, 10:41 AM   #18
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Join Date: Apr 2008
Location: maple
Posts: 44
Putting ing low grade fuel than is recomended will cause the engine to retard the timming to avoid detonation in high copres engine, Wich means less power.
I put 91 shell in mine. Should i switch to 94ultra, is it worth the extra money? I read somewhere that the E46 does worse with ultra.
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