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      05-07-2012, 08:02 PM   #8
FrankiE90
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Quote:
Originally Posted by mashimarho View Post
5 inch?
Wow, there was another 5 inch DP somewhere else.
I don't think there was much gain versus the 3.5 or 4 inch, but definitely a plus to be able to pass emissions and get substantial gains.
that would be CP-E big boi dp.


Quote:
Originally Posted by BMW_Belgier View Post
Hello Guys (and Ladies)

Has somebody experience with this:

http://www.ardesign.info/store/bmw/e...-n55-2011.html

Thanks for your Answers!!!
BMW_Belgier
ur an xi, u got cat's on ur midpipe -
get'n hiflow cats on ur DP maybe more work
than u may want to do.
performance wise u may gain very little.

i say cut ur cats on the midpipe
or fabricate straight pipe for mid section
- so when u need to get inspection
u can slap on the cat'd mid section.
should gain atleast 10-15whp with 2ndary cats gone.
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E90s (been gone but not forgotten) KW clubsports 18" BBS GT4 // Build E30 (pending) + E46 M3 Wagon ESTORIL Blue