Stock Exhaust Mod (PICS)

Bubbles · 11-09-2011, 08:25 PM

I wanted to share some pics of the exhaust mod I had done on my car.

I had a few Ferrari drivers at the last track day tell me how great the car sounded, which I think confirms how great this motor sounds with a proper exhaust.

No regrets whatsoever!

Superfly_M3 · 11-09-2011, 08:31 PM

Sound impressions?

Bubbles · 11-09-2011, 08:49 PM

Quote:

Originally Posted by Superfly_M3

Sound impressions?

Sounds like a high reving V8 should sound, especially on downshifts. I love it.

The sounds has actually helped a great deal with rev matching allowing me to put up personal best times.

mmm def · 11-09-2011, 09:58 PM

So all you do is take out the perforated section and weld in 2 straight pipes? That's it?

Bubbles · 11-09-2011, 11:35 PM

Quote:

Originally Posted by mmm def

So all you do is take out the perforated section and weld in 2 straight pipes? That's it?

We capped the small perforated pipes as well, replaced the stuffings. That's it.

Dave07997S · 11-10-2011, 12:21 AM

Why would you need to replace the stuffing if all the perforated pipe is replaced with solid pipe?

Dave

BMWJ · 11-10-2011, 06:10 AM

so is this any different than just eliminating the rear muffler and putting straight pipes after the second set of cats? Is your sound now just being tuned by two sets of cats and resonators?

CCLSVTM3 · 11-10-2011, 06:40 PM

Do you think there is a possibility of HP gains???

Malek@MRF · 11-10-2011, 06:50 PM

Quote:

Originally Posted by CCL16M3

Do you think there is a possibility of HP gains???

There are zero power gains with this.

The packing would be unnecessary if all the perforated tubing was removed.

VegasEgg · 11-10-2011, 09:47 PM

Quote:

Originally Posted by CCL16M3

Do you think there is a possibility of HP gains???

No HP gain but I swear my throttle feels different.

Bubbles · 11-11-2011, 06:58 AM

Quote:

Originally Posted by Dave07997S

Why would you need to replace the stuffing if all the perforated pipe is replaced with solid pipe?

I didn't want any chance for rattles, so we dumped i back in before we resealed the chambers. Not sure if it reduces the volume, but I don't want the car any louder, it's at the sweet spot.

Dave

Quote:

Originally Posted by BMWJ

so is this any different than just eliminating the rear muffler and putting straight pipes after the second set of cats? Is your sound now just being tuned by two sets of cats and resonators?

I didn't want any chance of drone so I keep the remaining chamber intact.

Quote:

Originally Posted by CCL16M3

Do you think there is a possibility of HP gains???

Unlikely, but no loss of torque. The motor feels a bit more free revving, similar to feel of the BMW performance exhaust. I did run personal best lap times this past weekend, the sound helps tremendously with rev matching a 6mt.

Quote:

Originally Posted by Jrollsp

No HP gain but I swear my throttle feels different.

Agreed.

11-09-2011, 08:25 PM	#1
Bubbles Brigadier General 2753 Rep 4,445 Posts Drives: Green Bastard Join Date: Jun 2007 Location: Bishop Bend iTrader: (3)	Stock Exhaust Mod (PICS) I wanted to share some pics of the exhaust mod I had done on my car. I had a few Ferrari drivers at the last track day tell me how great the car sounded, which I think confirms how great this motor sounds with a proper exhaust. No regrets whatsoever! Attached Images __________________ Last edited by Bubbles; 11-09-2011 at 11:36 PM..
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11-09-2011, 08:31 PM	#2
Superfly_M3 Captain 72 Rep 959 Posts Drives: 2011 M3 Join Date: Sep 2011 Location: Toronto iTrader: (0)	Sound impressions?
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11-09-2011, 09:58 PM	#4
mmm def Colonel 144 Rep 2,610 Posts Drives: 21 330, 19 ND2 RF, 11 RX350 Join Date: Dec 2006 Location: NJ iTrader: (0)	So all you do is take out the perforated section and weld in 2 straight pipes? That's it?
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11-10-2011, 12:21 AM	#6
Dave07997S Brigadier General 720 Rep 3,964 Posts Drives: 2020 Ford Mustang GT Join Date: May 2009 Location: El Segundo, CA iTrader: (1)	Why would you need to replace the stuffing if all the perforated pipe is replaced with solid pipe? Dave __________________ 2020 Ford Mustang GT 6MT PP1 444rwhp (Sold)2013 M3 Coupe-MR/BLK ZCP, 2011 M3 Coupe-MR/Blk 2007 Porsche 997C2S Speed Yellow/Blk sport seats 2004 BMW M3 Imola/Blk
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11-10-2011, 06:10 AM	#7
BMWJ Lieutenant 61 Rep 480 Posts Drives: 2011 E92 M3 Join Date: Oct 2011 Location: NY iTrader: (0)	so is this any different than just eliminating the rear muffler and putting straight pipes after the second set of cats? Is your sound now just being tuned by two sets of cats and resonators?
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11-10-2011, 06:40 PM	#8
CCLSVTM3 Lieutenant 36 Rep 523 Posts Drives: Interlagos blue E90 M3 Join Date: Jul 2011 Location: Burbank, CA iTrader: (1)	Do you think there is a possibility of HP gains??? __________________ BMC filter, OEM Exh Mod, ESS Direct Flash tune, flat black kidney grills, color painted front reflectors, LUX Angel eyes, -2012 SVT Raptor 4 dr -09 E90 M3
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