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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > 328i exhaust, intake manifold, airbox, questions



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      07-05-2014, 03:25 PM   #23
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I guess stock...or a tune showing 02 sensors are ready with non catted headers
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      07-05-2014, 10:48 PM   #24
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      07-06-2014, 09:30 PM   #25
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so from the sounds of the threads about supersprint headers everyone bitches about how loud they are (minus one man card for not liking a loud car that youve put so much work into) but since im the only driver and i dont have a family sounds to be up my ally
the only thing is i have to deal with emissions so i dont know what cats to run. i would wanna run the SS sport cats but i have a feeling the SC will blow them to bits
what should i look for interms of cats
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      07-06-2014, 10:53 PM   #26
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If you're considering aftermarket catalytic converters, placing them further away from a heat source like the engine will probably make them last longer.

But loud just to be loud isn't cool. Some noise at WOT is ok, but I shouldn't be waking up everyone by driving by. I drive an "entry" luxury car, not a Mustang, I expect some refinement.

I would leave the exhaust stock, change the headers and call it a done deal.
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      07-06-2014, 11:15 PM   #27
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i dont mean that loud but still want to make it so that way nothing will restrict the superchargers power and everything flows nicely with out it restricing the super charger and i would want a nice sound now annoying
i have a feeling keeping everything stock except the headers will restrict the flow of air
i was thinking doing headers and cats and possibly getting rid of the resinator and running a aftermarket exhaust that sounds nice but doesnt wake the neighbors to much (even though their pricks anyways and i would mind keeping them up at night) \
yeah idk what to do
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      07-06-2014, 11:46 PM   #28
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Quote:
Originally Posted by dgritti View Post
i dont mean that loud but still want to make it so that way nothing will restrict the superchargers power and everything flows nicely with out it restricing the super charger and i would want a nice sound now annoying
i have a feeling keeping everything stock except the headers will restrict the flow of air
i was thinking doing headers and cats and possibly getting rid of the resinator and running a aftermarket exhaust that sounds nice but doesnt wake the neighbors to much (even though their pricks anyways and i would mind keeping them up at night) \
yeah idk what to do
Headers before anything, the biggest bottleneck out there.
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      07-08-2014, 01:31 PM   #29
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alright so i guess the next step is to find headers then thanks
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