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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > HPF exhaust vs. AA exhaust?



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      07-11-2012, 09:29 PM   #1
hetzle
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HPF exhaust vs. AA exhaust?

Currently stuck between the two!

Differences I've noticed:
-HPF is a single 3.5" pipe from the DP back to dual tips
-HPF uses a single 14" resonator
-HPF uses a flex section (which helps when the engine moves around)
-AA is a dual exhaust from the DP back
-AA uses an x-pipe
-AA uses dual mufflers at the rear


HPF is $1595
AA is $1890

Opinions and soundclips of AA and HPF exhausts on an N55 car would be greatly appreciated!
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2011 335i sedan 6MT, 515whp/530wtq. Pure Turbo Stage 2, Motiv SST TwinDisk Clutch/FW, Motiv Flash, AA 4" DP, ER FMIC, AA turbo-back exhaust, Quaife LSD, ST Coilovers, BMS Intake, UUC DSSR+SSK, ER CP, BMS CDV, BMS OCC, Arkym CF trunk

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      07-11-2012, 10:42 PM   #2
fasteddie222
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I love my aa exhaust.... sounds awesome especially with dps installed.
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      07-11-2012, 10:48 PM   #3
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Here's a video of my aa exhaust before I installed dps. I need to shoot another video with the dps intalled.

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      07-11-2012, 11:02 PM   #4
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Sounds great Eddie!

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      07-11-2012, 11:41 PM   #5
hetzle
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That does sound very good, I'm looking for more clips sans-DP if you guys have any
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