E46Fanatics - View Single Post - My 2003 330i ZHP S54 Swap Conversion
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Old 07-28-2017, 06:52 PM   #11
18rabbit
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Join Date: Sep 2009
Location: Kennett Square, PA 19348
Posts: 117
My Ride: '02 330it
I'm curious to hear what an educated someone has to say about the quad exhaust. One bank now has about 2 ft of additional back pressure on it. Will that cause any issue? Car looks so sick BTW.
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