BMW Perf Exhaust w/ Downpippes - Very Raspy

SuperBmw · 10-29-2011, 08:51 PM

Everyone with the setup seems to be getting rasp according to PM's so I doubt it's the downpipes touching something.

Lspear817 · 10-29-2011, 09:13 PM

Everything is fine.... Obviously its going to rasp.... If you did not know that.. My mind would be blown!

It sounds good! rasps above 5000 rpm maybe 1st n 2nd then with windows down its not that bad and has a tone in the upper gears highway driving!

keep it the same! its Dank!

Glowin · 10-30-2011, 10:57 PM

So how's the stock exhaust with catless DP's, and secondary cats in place? Any rasp for that setup?

samchoi604 · 10-31-2011, 03:04 AM

Quote:

Originally Posted by Glowin

So how's the stock exhaust with catless DP's, and secondary cats in place? Any rasp for that setup?

Interested in this as well. Particularly, 335i coupe with AT, stock exhaust except for catless DPs. I know sedan vs. coupe and AT vs. MT makes a difference.

805beemer · 10-31-2011, 03:43 AM

here's a video comparing stock dp's vs catless dp's and stock exhaust. Whats weird is its sounds like he has horrible waste gate rattle on the stock setup and it's gone with the plm dp's.

SuperBmw · 11-01-2011, 05:46 PM

Quote:

Originally Posted by Glowin

So how's the stock exhaust with catless DP's, and secondary cats in place? Any rasp for that setup?

It sounds pretty good

10-29-2011, 08:51 PM	#23
SuperBmw Lieutenant 74 Rep 511 Posts Drives: 07 E92 335i Join Date: Dec 2010 Location: Toronto iTrader: (5)	Everyone with the setup seems to be getting rasp according to PM's so I doubt it's the downpipes touching something.
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10-29-2011, 09:13 PM	#24
Lspear817 Private First Class 7 Rep 100 Posts Drives: Possibly 335is Join Date: Jan 2011 Location: Maryland iTrader: (0)	Everything is fine.... Obviously its going to rasp.... If you did not know that.. My mind would be blown! It sounds good! rasps above 5000 rpm maybe 1st n 2nd then with windows down its not that bad and has a tone in the upper gears highway driving! keep it the same! its Dank!
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10-30-2011, 10:57 PM	#25
Glowin Captain 83 Rep 978 Posts Drives: X3 35 & 335i now - M2/M4 next? Join Date: Jun 2009 Location: Seattle iTrader: (0)	So how's the stock exhaust with catless DP's, and secondary cats in place? Any rasp for that setup?
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10-31-2011, 03:43 AM	#27
805beemer Captain 23 Rep 647 Posts Drives: 2008 135i Join Date: Jul 2011 Location: Lompoc, CA iTrader: (4)	here's a video comparing stock dp's vs catless dp's and stock exhaust. Whats weird is its sounds like he has horrible waste gate rattle on the stock setup and it's gone with the plm dp's.
	Appreciate 0 Quote