Thread: My 128i Project
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      01-19-2010, 04:28 PM   #35
pushkin
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Drives: 128i
Join Date: Aug 2009
Location: Toronto

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Quote:
Originally Posted by 1ntense_Rocket View Post
any problems with back pressure with your exhaust system? i had a muffler delete on my 1er about 5 months ago, i took it off because i felt that i lossed lots of torque in the lower end, but wasn't too loud because i kept the resonators.
You can check the before and after dyno sheets to see the difference at WOT. Personally I don't feel any "loss of back pressure". Considering that the exhuast first has to pass through the 2 cats on the headers and through the stock muffler I doubt there will be any "loss of back pressure". But if you have any concern check the dyno sheets.

Stock vs Intake:
http://www.dynamotorsports.ca/dynogr...iInjenDyno.jpg

Intake and Exhaust:
http://www.dynamotorsports.ca/dynogr...xh128iDyno.jpg
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