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Old 12-19-2012, 06:30 PM   #48
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Join Date: May 2003
Location: Bay Area, CA
Posts: 5,267
My Ride: 2002 Stock 330Ci
Originally Posted by PEI330Ci View Post
More info...ok.

It's possible that the cats have been the issue.

It's also possible you have an oversized pulley for the TS2+ kits by mistake. (The TS3 kit I think was set at 13 PSI, but needed different cams and aftermarket headers.)

I would want to fit the headers with the engine out, but before you do that you need to figure out if your existing CATs are bad. It would be a bit silly to replace them, only to find you had the same problem. (Overboosting)

Maybe consider sending the headers back to the manufacturer to have them checked?
TS3 could have ran 14, 15.2, 16PSI. ESS 248/256 cams are required and aftermarket headers.
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