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Old 09-14-2007, 02:55 PM   #19
propr'one
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Join Date: Jun 2004
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just running a motor too lean can, and will eventually damage it even without knocking. But just for a reference point for you.

My motor is a m52b28, pretty much stock. I'm running s52b32 software on it (litterally, took the chip out of a M3, put it in my car, no tuning).

Because of things like the Maf, CPS, O2 sensors, etc, your chip makes sure its running correctly. You can usually tell a poorly tuned car very quickly. Like mark has said, dont worry about it, put the chip in (assuming its for the correct motor (vanon vs-non vanos) and enjoy.
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