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      03-14-2013, 12:15 AM   #1
momo3605
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328i M peformance exhaust hp gains?

Since active autowerke claims 9hp/13tq, does that mean that power can be gained from the M performance exhaust as well?
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      03-14-2013, 12:17 AM   #2
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Since they are both axlebacks...
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      03-14-2013, 12:52 AM   #3
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Quote:
Originally Posted by momo3605
Since they are both axlebacks...
Axle backs are worthless imho. Get something for a decent price which is downpipe back. Do these cars have the cats in the middle of the downpipe as well?
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      03-14-2013, 01:10 AM   #4
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Quote:
Originally Posted by momo3605 View Post
Since active autowerke claims 9hp/13tq, does that mean that power can be gained from the M performance exhaust as well?
No. Just a leaner, meaner G R O W L.
More meaner than leaner.
Ok, so it's not even leaner.
At all.
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      03-14-2013, 03:06 AM   #5
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I saw 7whp 20ft lbs with a catback. That was likely mostly muffler. I would say the MP units likely give little hp, within variance in dyno runs, say 2-3whp.
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      03-14-2013, 08:54 PM   #6
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Quote:
Originally Posted by Jamesons Viggen View Post
I saw 7whp 20ft lbs with a catback. That was likely mostly muffler. I would say the MP units likely give little hp, within variance in dyno runs, say 2-3whp.
Sounds realistic!
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      03-26-2013, 09:35 PM   #7
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I've just installed my m performance exhaust for my 328i.
Although I don't think there's any said hp gain but I can feel a little more power from it and the turbo sounds a bit louder too. Must be from the better air flow.
So far I'm loving the exhaust, a little bit louder would suit me more, so by time when I get my bms and dp that should sort out all my problems.
Cheers
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      03-26-2013, 10:17 PM   #8
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Is there a resonator on the 328? I see a can near the middle and not sure if that is the resonator or cats?
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      03-26-2013, 11:50 PM   #9
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Quote:
Originally Posted by overkill1125
Is there a resonator on the 328? I see a can near the middle and not sure if that is the resonator or cats?
Yes that center can in the exhaust is a resonator.
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      03-27-2013, 06:34 PM   #10
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Quote:
Originally Posted by stormtrooper328i View Post
Yes that center can in the exhaust is a resonator.
So did anyone removed it like most do it on the e90?
Surprised that the BMW Perf Exhaust does not remove it on the F30 but it does on the e90
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