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      02-20-2015, 07:48 AM   #12
imstimpy
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Drives: 2010 M3
Join Date: Dec 2013
Location: United States

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Quote:
Originally Posted by BobS View Post
They should be able to do the same thing ESS does. Make sure you follow the drive cycle a couple times and have the stock xpipe back on the car.
You'd think, right? I'm 230 miles and two full drive cycles in. I'm still sitting on NOT READY for the Catalyst and O2 Sensor with factory cats in place (and have always in place).
Appreciate 0