how much power from ams exhaust ?

sabredog · 08-15-2010, 07:31 PM

can't seem to find any dyno numbers for the ams exhaust for e90.i read that it was 2 h.p. more than ae. is that true ?

jpsimon · 08-15-2010, 07:33 PM

Grassroots motorsports did a comparison, catless AE made i think ~10whp peak gains on their car

http://grassrootsmotorsports.com/art...ive-decisions/

BobVader · 08-15-2010, 07:35 PM

Quote:

Originally Posted by sabredog

can't seem to find any dyno numbers for the ams exhaust for e90.i read that it was 2 h.p. more than ae. is that true ?

On stock boost...

helix fmic. UR catless DP, AA exhaust, DCI...are good for 18-22 whp on dyno for me.

sabredog · 08-15-2010, 09:38 PM

grassroots didn't test the ams exhaust though. i cant find any h.p. numbers for the ams system even on ams's site.

jpsimon · 08-15-2010, 09:54 PM

I guess my point is, you're talking about 1-3hp difference on a completely stock car so go with the one that sounds the best and drones the least

sabredog · 08-15-2010, 10:04 PM

i see your point. i'm torn between hks and ams.

michael1284 · 08-15-2010, 10:26 PM

i like hks personally.

cn555ic · 08-15-2010, 10:42 PM

Having aftemarket exhaust the hp gain is marginal if that and IMO all exhaust made for the N54 will yield you the exact same hp and anyone else telling you theirs yields more is marketing at it best! AFE intake yields an amazing 24 hp!!! lol

only1 · 08-15-2010, 11:00 PM

I have the ams, however i have yet to dyno just after i put it on, when i do thought the results will be isolated as this is the only mod i have done after my last dyno.

I like the fact that it is a single 3" in and is also very light. The car sounds pretty angry when you get on it but depending on throttle inputs can be as quiet or near too as stock.

There is slight drone at between 1900-2200 but really is not bad at all and you can control that by using ds and keeping the revs above or below.

Bimmer This · 08-15-2010, 11:16 PM

1-2 hp is not really not that much of a difference. I would be more worried about sound then 1-2 hp difference IMHO.

forza1976 · 08-15-2010, 11:41 PM

None that you will feel

sabredog · 08-16-2010, 09:40 AM

Anybody Dyno Before And After ?

Eric@AMS · 08-17-2010, 04:13 PM

You are correct. Gains from just about any cat-back system are minimal. On our AMS BMW 335i, we saw around a 10hp increase from bolting up the cat-back. Quality and weight savings on the other hand are substantial. We managed to knock off 40lbs of weight over the factory cat-back and incorporated v-band connections for a solid seal and easy adjustment. Adding downpipes to the equation is a whole different story. Typically, a quality turbo back exhaust will yield you around 30whp gains. We ran CPE downpipes and our AMS cat-back on our car and saw about a 30whp gain on the dyno.

ar design · 08-18-2010, 08:37 AM

Quote:

Originally Posted by Eric@AMS

You are correct. Gains from just about any cat-back system are minimal. On our AMS BMW 335i, we saw around a 10hp increase from bolting up the cat-back. Quality and weight savings on the other hand are substantial. We managed to knock off 40lbs of weight over the factory cat-back and incorporated v-band connections for a solid seal and easy adjustment. Adding downpipes to the equation is a whole different story. Typically, a quality turbo back exhaust will yield you around 30whp gains. We ran CPE downpipes and our AMS cat-back on our car and saw about a 30whp gain on the dyno.

08-15-2010, 07:31 PM	#1
sabredog Second Lieutenant 23 Rep 222 Posts Drives: 2007 335i 4 dr Join Date: Jun 2008 Location: delaware iTrader: (3)	how much power from ams exhaust ? can't seem to find any dyno numbers for the ams exhaust for e90.i read that it was 2 h.p. more than ae. is that true ?
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08-15-2010, 07:33 PM	#2
jpsimon Team Zissou 3084 Rep 10,198 Posts Drives: 2022 AWD M3 Comp - SMB Join Date: Dec 2006 Location: CT iTrader: (7)	Grassroots motorsports did a comparison, catless AE made i think ~10whp peak gains on their car http://grassrootsmotorsports.com/art...ive-decisions/ Last edited by jpsimon; 08-15-2010 at 07:40 PM..
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08-15-2010, 09:38 PM	#4
sabredog Second Lieutenant 23 Rep 222 Posts Drives: 2007 335i 4 dr Join Date: Jun 2008 Location: delaware iTrader: (3)	grassroots didn't test the ams exhaust though. i cant find any h.p. numbers for the ams system even on ams's site.
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08-15-2010, 09:54 PM	#5
jpsimon Team Zissou 3084 Rep 10,198 Posts Drives: 2022 AWD M3 Comp - SMB Join Date: Dec 2006 Location: CT iTrader: (7)	I guess my point is, you're talking about 1-3hp difference on a completely stock car so go with the one that sounds the best and drones the least
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08-15-2010, 10:04 PM	#6
sabredog Second Lieutenant 23 Rep 222 Posts Drives: 2007 335i 4 dr Join Date: Jun 2008 Location: delaware iTrader: (3)	i see your point. i'm torn between hks and ams.
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08-15-2010, 10:26 PM	#7
michael1284 Colonel 219 Rep 2,634 Posts Drives: 2018 M3 Comp Join Date: Apr 2010 Location: DFW iTrader: (44)	i like hks personally. __________________ e92, e90, f30 #DieselLife, e46, f80
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08-15-2010, 10:42 PM	#8
cn555ic 442 Rep 18,331 Posts Drives: 335i Join Date: Jun 2007 Location: US iTrader: (6)	Having aftemarket exhaust the hp gain is marginal if that and IMO all exhaust made for the N54 will yield you the exact same hp and anyone else telling you theirs yields more is marketing at it best! AFE intake yields an amazing 24 hp!!! lol
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08-15-2010, 11:00 PM	#9
only1 Lieutenant 28 Rep 513 Posts Drives: 07 Z06, 09 e90335i Join Date: Jul 2007 Location: Markham iTrader: (5)	I have the ams, however i have yet to dyno just after i put it on, when i do thought the results will be isolated as this is the only mod i have done after my last dyno. I like the fact that it is a single 3" in and is also very light. The car sounds pretty angry when you get on it but depending on throttle inputs can be as quiet or near too as stock. There is slight drone at between 1900-2200 but really is not bad at all and you can control that by using ds and keeping the revs above or below.
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08-15-2010, 11:16 PM	#10
Bimmer This Major General 99 Rep 6,473 Posts Drives: 2007 BMW 335i Join Date: Nov 2008 Location: Westminster iTrader: (3)	1-2 hp is not really not that much of a difference. I would be more worried about sound then 1-2 hp difference IMHO.
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08-15-2010, 11:41 PM	#11
forza1976 Major General 3405 Rep 6,595 Posts Drives: BMW Join Date: Aug 2007 Location: 49417 and 60610 iTrader: (13) Garage List 2022 BMW M3X [10.00]	None that you will feel
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08-16-2010, 09:40 AM	#12
sabredog Second Lieutenant 23 Rep 222 Posts Drives: 2007 335i 4 dr Join Date: Jun 2008 Location: delaware iTrader: (3)	Anybody Dyno Before And After ?
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08-17-2010, 04:13 PM	#13
Eric@AMS Captain 71 Rep 726 Posts Drives: 2007 335i Join Date: Sep 2008 Location: West Chicago, IL iTrader: (5)	You are correct. Gains from just about any cat-back system are minimal. On our AMS BMW 335i, we saw around a 10hp increase from bolting up the cat-back. Quality and weight savings on the other hand are substantial. We managed to knock off 40lbs of weight over the factory cat-back and incorporated v-band connections for a solid seal and easy adjustment. Adding downpipes to the equation is a whole different story. Typically, a quality turbo back exhaust will yield you around 30whp gains. We ran CPE downpipes and our AMS cat-back on our car and saw about a 30whp gain on the dyno.
	Appreciate 0 Quote