Just installed AA catless x-pipe...

Boostin FD · 03-20-2012, 12:01 PM

Mine catless setup doesn't smell as much now as it used to at the beginning. I don't know if i'm just used to it, or if someone re-learned.

Jbook · 04-11-2012, 12:11 PM

Any e90 guys with full exhaust (especially AA) experiencing what sounds like a vibration in the low RPMs from a stop? It sounds like it's coming from the rear cupholders in the center armrest...

L4ces · 04-12-2012, 12:44 AM

Can't help you there. But I hope you post videos.

How much did the cats reduce the smell?

Jbook · 04-12-2012, 11:35 AM

Quote:

Originally Posted by L4ces

Can't help you there. But I hope you post videos.

How much did the cats reduce the smell?

I would say the cats reduced the smell 90-95%. It only smells a little bit when the car is first started up and cold or when I reverse into a spot I can smell it a little after I get out of the car. The smell is not even comparable to how bad it was catless.

L4ces · 04-12-2012, 02:19 PM

Quote:

Originally Posted by Jbook

Quote:

Originally Posted by L4ces

Can't help you there. But I hope you post videos.

How much did the cats reduce the smell?

I would say the cats reduced the smell 90-95%. It only smells a little bit when the car is first started up and cold or when I reverse into a spot I can smell it a little after I get out of the car. The smell is not even comparable to how bad it was catless.

Wow that is good to know. How much louder is it with the xpipes than without? Startling loud, moderately?

Jbook · 04-12-2012, 03:39 PM

Quote:

Originally Posted by L4ces

Wow that is good to know. How much louder is it with the xpipes than without? Startling loud, moderately?

I would say it's only moderately louder, but much louder above 4k RPM. The AA exhaust is already pretty loud, but now it has more of a rumble when coming to a stop and screams above 4k rpm. Without the x-pipe, the exhaust sound tended to be drowned out by engine noise above 4500 RPM or so.

edwinm3 · 04-13-2012, 11:12 AM

Quote:

Originally Posted by L4ces

Can't help you there. But I hope you post videos.

How much did the cats reduce the smell?

I have full AA catless absolutely no rattling or noises

03-20-2012, 12:01 PM	#23
Boostin FD Bored all the time 382 Rep 2,173 Posts Drives: Batmobile Join Date: Jan 2010 Location: Kirkwood iTrader: (2)	Mine catless setup doesn't smell as much now as it used to at the beginning. I don't know if i'm just used to it, or if someone re-learned. __________________ Current: 2014 991 Turbo RS Past: 15 GT3, 17 R8 SC, Two 16 M4 GTS’s, Two 18 GT350R's, Two 13 RS5’s, 13 M3, 10 R8, 15 M4, 09 M3, 04 M3, 09 S5, 02 M3... It all started with an RX-7 (FD).
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04-11-2012, 12:11 PM	#24
Jbook Lieutenant Colonel 163 Rep 1,506 Posts Drives: '15 FO M4 Join Date: Sep 2010 Location: NorCal Bay Area iTrader: (23) Garage List 2011 BMW E90 M3 [9.44]	Any e90 guys with full exhaust (especially AA) experiencing what sounds like a vibration in the low RPMs from a stop? It sounds like it's coming from the rear cupholders in the center armrest...
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04-12-2012, 12:44 AM	#25
L4ces Major 337 Rep 1,489 Posts Drives: 2008 E92 M3 Alpine White Join Date: Aug 2010 Location: NJ - NY iTrader: (0) Garage List 2008 M3 [0.00]	Can't help you there. But I hope you post videos. How much did the cats reduce the smell?
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