Review: ACM OEM Modified Exhaust

S65V8 · 11-21-2011, 06:12 PM

Hi All-

Recently installed an OEM modified exhaust by ACM. It came with the full bells and whistles (Titanium Tips, Blacked Out Can). Big thanks to ACM for the work they did on my car and the great service delivered! If you're in the tri-state, you should check them out.

Objective
-Find an exhaust that sounds more aggressive than stock, but neither drones or is too loud for my taste (i.e. Race exhaust).

Strategy / Process of Vetting
-Listen to a variety of aftermarket exhausts in-person (Eisenmann Race, Magnaflow, Active Autowerke Sig, Remus, etc.)
-Compared to ACM OEM Modified Exhaust
-Compare benefits of pricing, looks, performance, etc.

Outcome / Results
-Expectations were met and exceeded (i.e. Looks, sound, fitment, ease of install). I was able to save and spend on other aftermarket "must-haves", with change left to spare.

Note: The blue tips and blacked out can from behind the car look very stealth (tips even look carbon from the back). When you walk up to the sides a bit the blue tips really add to the edge of the look (especially on JBZ or an ILB car)

What does it sound like?
See this forum link from ACM (video with HD vid on moving car).

http://www.m3post.com/forums/showthr...Modded+Exhaust

To confirm, it does not drone and sounds great inside the cabin. It's not too intrusive, but still delivers the V8 howl and depth you'd expect. It is not "tame" by any stretch of the imagination. I'd have to say more aggressive then M Perf. but below Race Exhaust set-ups. So a nice happy medium.
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PhillyNate · 11-21-2011, 06:26 PM

Nice write-up. Appreciated. Tell me what your feeling power wise. I'm not as concerned with an increase as much as lost power. Any lost power?

S65V8 · 11-21-2011, 07:53 PM

Quote:

Originally Posted by PhillyNate

Nice write-up. Appreciated. Tell me what your feeling power wise. I'm not as concerned with an increase as much as lost power. Any lost power?

Feels better than before. No loss of power or pull. If anything I feel theres less restriction through rev range in all gears.

PhillyNate · 11-21-2011, 08:06 PM

Quote:

Originally Posted by SROC5

Feels better than before. No loss of power or pull. If anything I feel theres less restriction through rev range in all gears.

Thanks. I may HAVE to do this.

IMG · 11-21-2011, 09:10 PM

Great write up and thanks for sharing,

for ACM as always !

zhp2m3 · 11-21-2011, 10:43 PM

tempting..looking forward to the pics.

Maseroche · 11-22-2011, 01:00 AM

Sounds seriously good!

Sal@AUTOcouture · 11-22-2011, 09:10 AM

Thanks for the review, Paul!

Glad you're enjoying it

S65V8 · 12-03-2011, 03:46 PM

Updated a much better picture of the exhaust. This one shows how stealth it looks from behind, the scorch tips only show actually in certain angles.

11-21-2011, 06:12 PM	#1
S65V8 _ 808 Rep 3,160 Posts Drives: ... Join Date: Apr 2009 Location: Los Angeles, CA iTrader: (10)	Review: ACM OEM Modified Exhaust Hi All- Recently installed an OEM modified exhaust by ACM. It came with the full bells and whistles (Titanium Tips, Blacked Out Can). Big thanks to ACM for the work they did on my car and the great service delivered! If you're in the tri-state, you should check them out. Objective -Find an exhaust that sounds more aggressive than stock, but neither drones or is too loud for my taste (i.e. Race exhaust). Strategy / Process of Vetting -Listen to a variety of aftermarket exhausts in-person (Eisenmann Race, Magnaflow, Active Autowerke Sig, Remus, etc.) -Compared to ACM OEM Modified Exhaust -Compare benefits of pricing, looks, performance, etc. Outcome / Results -Expectations were met and exceeded (i.e. Looks, sound, fitment, ease of install). I was able to save and spend on other aftermarket "must-haves", with change left to spare. Note: The blue tips and blacked out can from behind the car look very stealth (tips even look carbon from the back). When you walk up to the sides a bit the blue tips really add to the edge of the look (especially on JBZ or an ILB car) What does it sound like? See this forum link from ACM (video with HD vid on moving car). http://www.m3post.com/forums/showthr...Modded+Exhaust To confirm, it does not drone and sounds great inside the cabin. It's not too intrusive, but still delivers the V8 howl and depth you'd expect. It is not "tame" by any stretch of the imagination. I'd have to say more aggressive then M Perf. but below Race Exhaust set-ups. So a nice happy medium. Attached Images Last edited by S65V8; 03-23-2012 at 05:57 AM..
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11-21-2011, 06:26 PM	#2
PhillyNate ENTHUSIAST 135 Rep 2,097 Posts Drives: 2010 Porsche Cayman Join Date: Apr 2011 Location: Philadelphia iTrader: (0) Garage List 2010 Porsche Cayman [0.00]	Nice write-up. Appreciated. Tell me what your feeling power wise. I'm not as concerned with an increase as much as lost power. Any lost power? __________________ "what I'm driving here...is an ending." Jeremy Clarkson 2010 Carrara White Porsche Cayman 6mt 2014 Whiteout Toyota GT-86 6mt(Sold 05/23/15) 2011 Alpine White BMW M3 6mt ZCP Coupe(forced retirement 06/06/14) 2008 Alpine White BMW 328i 6mt Coupe(retired 06/21/11)
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11-21-2011, 09:10 PM	#5
IMG 1122 Rep 7,690 Posts Drives: E36 M3 Track car,Ess E90 M3 DD Join Date: Feb 2008 Location: Location iTrader: (6)	Great write up and thanks for sharing, for ACM as always !
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11-21-2011, 10:43 PM	#6
zhp2m3 Private First Class 148 Rep 192 Posts Drives: M2 Join Date: Oct 2011 Location: SF Bay Area iTrader: (0)	tempting..looking forward to the pics.
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11-22-2011, 01:00 AM	#7
Maseroche Major 55 Rep 1,447 Posts Drives: '12 BMW M3 Join Date: Sep 2009 Location: Bahrain iTrader: (0) Garage List 2012 BMW M3 [0.00]	Sounds seriously good! __________________ Khalid '12 BMW E92 M3 '03 BMW E46 M3 '14 Mercedes-Benz S400 '18 Alfa Romeo Giulia Quadrifoglio
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11-22-2011, 09:10 AM	#8
Sal@AUTOcouture BimmerPost Supporting Vendor 733 Rep 10,105 Posts Drives: E93 M3, E36 M3 Join Date: Feb 2007 Location: Sofla iTrader: (30)	Thanks for the review, Paul! Glad you're enjoying it
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12-03-2011, 03:46 PM	#9
S65V8 _ 808 Rep 3,160 Posts Drives: ... Join Date: Apr 2009 Location: Los Angeles, CA iTrader: (10)	Updated a much better picture of the exhaust. This one shows how stealth it looks from behind, the scorch tips only show actually in certain angles.
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