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      12-03-2008, 03:08 PM   #53
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Drives: E92 Jerez DCT M3
Join Date: Jan 2008
Location: Anaheim Hills / Malibu

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Quote:
Originally Posted by Strax View Post
Also Hartge deletes the first set of cats and replaces the second set with high flow cats. You also have to lenghten the O2 sensors, that go just before and just after the new sport cats. The result, together with the xpipe and muffler, is really good. The car is significantly faster.
This is a good idea as well, to get rid of the first set and go to a higher flowing second set along with custom tuning. This option is not cheap, but the ultimate in performance
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