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      05-23-2012, 08:08 PM   #63
RobMCoupe
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Drives: 2007 Z4 M Coupe
Join Date: Feb 2010
Location: Bay Area

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Quote:
Originally Posted by zubydafa
before i PM...what's a cold start delete? also SAP delete?
Cold start delete tone down the exhaust on cold start. BMW have a program to heat up the primary cats faster for emission. I removed my primary cats and want to be more neighbor friendly as I leave my house early morning.

SAP delete is for those who removed secondary air pump from throwing a code.
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