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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 > best resonated downpipess for e92 335i coupe?



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      10-04-2012, 11:26 PM   #1
fl0wmastr
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best resonated downpipess for e92 335i coupe?

what are the best resonate downpipes dp for e92 335i n54 coupe? i heard a lot of people like vrsf but complain about smoking, rasp, and check engine lights. whats the best dp for no rasp.. perhaps resonated or w hi flow cats?
thanks
brian
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      10-04-2012, 11:47 PM   #2
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Save your money. Went racing last weekend with another guy from Portland who is running stock down pipes and exhaust and turns 12.3's. He has DCI, FMIC and Aquamist HFS-4 Injection System with a JB4, but is planning to switch to COBB because the JB4 doesn't manage timing... The only reason he is running stock is according to him he doesn't see any performance increase and he can't stand the rasp at 4000 rpm.

So if you absolutely need DPs, get high flow cats in your DPs and you won't have to worry about codes, rasp, smoke... Otherwise, get the VRSF. For the money, they are the best.
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      10-04-2012, 11:59 PM   #3
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catted dp's are close to useless, catless dp's will inevitably rasp around 5000rpm unless you put a resonator in the system (you can replace secondary cats with vibrant resonators like many people have done)... you won't get codes if you have a tune or get a dp fix...
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