128i vs 135i exhausts

1ntense_Rocket · 10-10-2009, 11:34 AM

Hey everybody... this may have been written about in another thread but i couldn't seem to find it.. sorry if that is...

I was wondering what the difference was between the 135i exhaust and 128i exhaust and why we cant use the after market mufflers the 135i's use. For example i put on an axleback (on my 128i) that should be on a 135i would it be a loss of power due to lack of back pressure?

I was running no muffler for a couple of months on my 128 and it sounded amazing. However, it felt as if i was losing a TON of power low end. Any insight would be much appreciated.

Thanks
1ntense..

ORIGIN M. · 10-10-2009, 11:39 AM

The reason you cannot use the 135 exhaust is because of exhaust manifold placement. You may be able to use the axle-back. I'd re-install my exhaust to return the lose of power and the MPG's...

10-10-2009, 11:34 AM	#1
1ntense_Rocket 1ntense_Rocket 28 Rep 301 Posts Drives: BMW 128i sport Join Date: Aug 2008 Location: Toronto, Canada iTrader: (1)	128i vs 135i exhausts Hey everybody... this may have been written about in another thread but i couldn't seem to find it.. sorry if that is... I was wondering what the difference was between the 135i exhaust and 128i exhaust and why we cant use the after market mufflers the 135i's use. For example i put on an axleback (on my 128i) that should be on a 135i would it be a loss of power due to lack of back pressure? I was running no muffler for a couple of months on my 128 and it sounded amazing. However, it felt as if i was losing a TON of power low end. Any insight would be much appreciated. Thanks 1ntense..
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10-10-2009, 11:39 AM	#2
ORIGIN M. Banned 3161 Rep 9,134 Posts Drives: ///M Join Date: Oct 2007 Location: Northern Hemisphere iTrader: (0)	The reason you cannot use the 135 exhaust is because of exhaust manifold placement. You may be able to use the axle-back. I'd re-install my exhaust to return the lose of power and the MPG's...
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