BMW //M Discussion on the BMW M1, BMW M3, BMW M4, BMW M5, and the BMW M6

Not sure??

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Old Oct 23, 2009 | 08:10 PM
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Not sure??

I have a 2005 BMW 645ci (stock). I found a performance chip which is pretty cheap im not sure if it will mess up my engine. should i get it?


engineperformancechip.com/bmw-performance-chip-bmw-645ci-2004-2005-c-3_103/power-performance-chip-x2-p-8
 

Last edited by GT3 Chuck; Oct 23, 2009 at 08:17 PM. Reason: embedded link to commercial non sponsor



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