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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > BMW PE Drone?? NEED HELP!!



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      02-04-2013, 09:42 AM   #23
benzo23
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Quote:
Originally Posted by Hooy View Post
Didn't read the whole thread, but here are my thoughts

The BMW PE for n52 does NOT DRONE AT ALL. There should be NO VIBRATIONS. Your installation was done poorly
+7434823924 the PE has 0 drone.
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      02-04-2013, 04:10 PM   #24
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My guess is that OP has most likely had a US spec 328i Perf muffler installed on his RHD euro spec. US has 2 sets of cats, Euro has one. Putting a US PE on a euro car will mean it will be overly loud and droney due it being designed for a more restricted exhaust system.

He needs to install some resonators in the mids where the secondary cats would be in the US version so as to compensate. Or buy the correct PE for the euro spec cars, that is actually designed for the car.
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