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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > what do u guys think about this setup ?



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      06-03-2009, 10:36 PM   #1
mr.ba6o0o6
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Exclamation what do u guys think about this setup ?

I have a 09 e92 dct , jb3 , injen CAI and AR DP
i've been thinking about having a custom exhaust , by removing the secondary cats , and having a magnaflow straight thru muffler instead of the oem mufflers
what do u guys think about that ? , will the loss of backpressure be a hp adder or the other way ? , this is my first FI car , so please excuse my lack of knowledge

or should i just leave my secondary cats and do the muffler delete ?

Thanks Alot !
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      06-03-2009, 11:17 PM   #2
Donald-335i
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i say go for it bro...

BTW Turbo Cars Less Backpressure = More HP!!!!!
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      06-03-2009, 11:18 PM   #3
MFKN3
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I had an aftermarket exhaust installed from factory dp's back. They deleted the resonator and secondary cats and put in a small muffler before each tip. Sounds good too and no drone
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      06-03-2009, 11:19 PM   #4
mr.ba6o0o6
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Quote:
Originally Posted by Donald-335i View Post
i say go for it bro...

BTW Turbo Cars Less Backpressure = More HP!!!!!
that's what i though but wasn't sure , so i asked the best

Thanks , hopefully i'll get to do it this week
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      06-03-2009, 11:25 PM   #5
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Sounds good to me!
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      06-03-2009, 11:29 PM   #6
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If you want a louder car go for it, but taking the secondary cats off of this car has shown no gains or 2-3whp... The catted midpipes don't add a significant amount of backpressure at the power the stock turbos can sustain, so if you want a better sound I would get an axleback system because having the smell of being catless and the same gains as going catless...
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      06-03-2009, 11:32 PM   #7
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Quote:
Originally Posted by Donald-335i View Post
i say go for it bro...

BTW Turbo Cars Less Backpressure = More HP!!!!!
+1
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