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      09-19-2012, 12:53 AM   #6
Beemw335
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Drives: 335i
Join Date: Mar 2011
Location: My car is my home

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Learn how any engine works offline,they all work basicaly the same, look up direct injection and read up on that, and then look up how a turbo works. You should get a basic understanding of how engines and modding this engine works. More boost=more power. So the mods allow you to run more boost and make more power.