AMS Exhaust idea. Let us know what you think!

possible335i2008 · 11-10-2008, 02:03 PM

bump for an update

Eric@AMS · 11-11-2008, 09:36 AM

Sorry guys, we just got back from being at SEMA for 12 days. What a long trip. While we were gone we had parts ordered to build a couple of prototype systems for testing. What we plan on doing is building a Dual 2.5 inch system and a single 3" system to test back to back and see if any power is lost or gained between them. From there we will decide what route to go.

Again sorry about the delay but we are on top of things!

Eric

Eric@AMS · 11-19-2008, 05:42 PM

Well Justin has a good portion of the downpipes mocked up and even the first part of the catback. IT looks SICK! I will post pictures in a few minutes. its starting to look like an AMS part though

Eric

Eric@AMS · 11-19-2008, 06:47 PM

Here are some rough prototype pics we have. Keep in mind this might not represent the actual system we make. This is more of a one off piece so we can test the power difference (if any) between a single 3" system that split off into two tips or a true dual 2.5" system.

We should have a completed test system before the end of the week.

In any event you can see the gears turning

Eric

imaznumkay · 11-19-2008, 06:50 PM

Quote:

Originally Posted by Eric@AMS

Here are some rough prototype pics we have. Keep in mind this might not represent the actual system we make. This is more of a one off piece so we can test the power difference (if any) between a single 3" system that split off into two tips or a true dual 2.5" system.

We should have a completed test system before the end of the week.

In any event you can see the gears turning

Eric

looks really clean!

battlehawk · 11-19-2008, 06:51 PM

i like

Digital.James · 11-19-2008, 06:53 PM

well at least that will work well once the big singles arrive

Gen_E92 · 11-19-2008, 06:57 PM

not bad Eric...can't wait to see the dual version

ironic · 11-19-2008, 08:31 PM

nice!

jb's335 · 11-19-2008, 08:48 PM

Looks great guys! I love the research going into this, there is no proof like back to back dyno runs! Any ideas after taking a longer look at the project of what kind of price we will be looking at? Maybe a decent exhaust for under a G (finally)?

1clean335i · 11-19-2008, 09:02 PM

nice!

rubber_ducky · 11-19-2008, 09:38 PM

Quote:

Originally Posted by jb's335

Looks great guys! I love the research going into this, there is no proof like back to back dyno runs! Any ideas after taking a longer look at the project of what kind of price we will be looking at? Maybe a decent exhaust for under a G (finally)?

According to another post in this thread, it could come in at significantly less than $1k. Fingers crossed.

Gen_E92 · 11-19-2008, 09:40 PM

Are you guys planning to release a quad version at the same time?

Eric@AMS · 11-19-2008, 09:43 PM

We will release whatever version that makes the most power, fits the best and is the most cost effective to the customer.

I personally think the single 3" that splits out to two tips in the back like the stock tips are set up is not only going to sound the best but produce just as much power as the true dual 2.5"

Eric

E82tt6 · 11-19-2008, 09:51 PM

Curious to see the dynos.

Are you doing the same for 135i? Exhaust is much more of a restriction on our car.

rubber_ducky · 11-19-2008, 09:52 PM

Quads are ok and all, but I can't help but feel as though it goes against the spirit of the exhaust. That being a lighter, less expensive, equally as powerful option compared to what's currently available.

Quad tips mean a higher price (than dual), slightly heavier (than dual), and then you'll likely end up having to buy a diffuser to clean up the rear bumper (if the bumper is OE).

Nate@IND · 11-19-2008, 09:54 PM

Quote:

Originally Posted by Eric@AMS

We will release whatever version that makes the most power, fits the best and is the most cost effective to the customer.

I personally think the single 3" that splits out to two tips in the back like the stock tips are set up is not only going to sound the best but produce just as much power as the true dual 2.5"

Eric

Well put Eric. We look forward to seeing what you guys come up with

scheherazade · 11-19-2008, 10:15 PM

If two turbos, do split
If one, do a single.

If you do 2 pipes into 1 (via Y joint), make sure the sum cross section area of the two down pipes is smaller than the cross section area of the 3" pipe. (Keeps back pressure under control).

Also, a single 3" pipe can be deeper sounding than twin 2.5" pipes.
Larger diameter piping will resonate lower frequencies better.

-scheherazade

AlpineG05 · 11-19-2008, 10:18 PM

looks good for sure and if it produces some good results i'm in.

Hallandale E92 · 11-20-2008, 07:10 AM

my exhaust on my old car was UR down pipes into 3" piping into a collector into 3" single pipe into a muffler then it went to a "y" into dual tips. It sounded amazing unfortunatlry the people who built my exhaust went out of business. If you guys build an exhaust like this. I'm 1st on your list. Just make a quad option. There was no drone with this setup

Jet335i · 11-20-2008, 09:13 AM

Quote:

Originally Posted by scheherazade

If two turbos, do split
If one, do a single.

If you do 2 pipes into 1 (via Y joint), make sure the sum cross section area of the two down pipes is smaller than the cross section area of the 3" pipe. (Keeps back pressure under control).

Also, a single 3" pipe can be deeper sounding than twin 2.5" pipes.
Larger diameter piping will resonate lower frequencies better.

-scheherazade

I'm pretty sure they already know that.

Sal@AUTOcouture · 11-20-2008, 10:00 AM

Quote:

Originally Posted by Jet335i

I'm pretty sure they already know that.

+1 took the words right out of my mouth

View Poll Results: Would you be interested in a twin tip single 3" pipe system
Yes, I would not only be interested but I would purchase one	53	36.05%
Yes, I like it but im not sure if I would buy it	44	29.93%
No, the factory has two dedicated pipes so I think all exhuasts must	36	24.49%
Not really sure, undecided	14	9.52%
Voters: 147. You may not vote on this poll

11-10-2008, 02:03 PM	#89
possible335i2008 Major 166 Rep 1,222 Posts Drives: 335i Join Date: Mar 2008 Location: united states iTrader: (10)	bump for an update
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11-11-2008, 09:36 AM	#90
Eric@AMS Captain 71 Rep 726 Posts Drives: 2007 335i Join Date: Sep 2008 Location: West Chicago, IL iTrader: (5)	Sorry guys, we just got back from being at SEMA for 12 days. What a long trip. While we were gone we had parts ordered to build a couple of prototype systems for testing. What we plan on doing is building a Dual 2.5 inch system and a single 3" system to test back to back and see if any power is lost or gained between them. From there we will decide what route to go. Again sorry about the delay but we are on top of things! Eric
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11-19-2008, 05:42 PM	#91
Eric@AMS Captain 71 Rep 726 Posts Drives: 2007 335i Join Date: Sep 2008 Location: West Chicago, IL iTrader: (5)	Well Justin has a good portion of the downpipes mocked up and even the first part of the catback. IT looks SICK! I will post pictures in a few minutes. its starting to look like an AMS part though Eric
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11-19-2008, 06:47 PM	#92
Eric@AMS Captain 71 Rep 726 Posts Drives: 2007 335i Join Date: Sep 2008 Location: West Chicago, IL iTrader: (5)	Here are some rough prototype pics we have. Keep in mind this might not represent the actual system we make. This is more of a one off piece so we can test the power difference (if any) between a single 3" system that split off into two tips or a true dual 2.5" system. We should have a completed test system before the end of the week. In any event you can see the gears turning Eric
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11-19-2008, 06:51 PM	#94
battlehawk Enlisted Member 2 Rep 36 Posts Drives: 2007 E90 335 XI Join Date: Nov 2008 Location: Chicago, IL iTrader: (0)	i like
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11-19-2008, 06:53 PM	#95
Digital.James Colonel 119 Rep 2,703 Posts Drives: GT4, Raptor.2, Tuono 1100F Join Date: Sep 2007 Location: NC iTrader: (7)	well at least that will work well once the big singles arrive
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11-19-2008, 06:57 PM	#96
Gen_E92 Brigadier General 118 Rep 3,432 Posts Drives: slow Join Date: Oct 2006 Location: Vancouver iTrader: (17) Garage List 2007 335i [7.80]	not bad Eric...can't wait to see the dual version
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11-19-2008, 08:31 PM	#97
ironic Major General 254 Rep 8,338 Posts Drives: Jet Black 335i Join Date: Dec 2006 Location: San Francisco, Ca iTrader: (22)	nice! __________________ Widebody 335i Project Car BUILD \| PHOTOSHOOT
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11-19-2008, 08:48 PM	#98
jb's335 Big Boost Addict 52 Rep 689 Posts Drives: AW e92 335 Join Date: Aug 2008 Location: Lima, OH iTrader: (12)	Looks great guys! I love the research going into this, there is no proof like back to back dyno runs! Any ideas after taking a longer look at the project of what kind of price we will be looking at? Maybe a decent exhaust for under a G (finally)?
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11-19-2008, 09:02 PM	#99
1clean335i Perf BMW mag issue 147, 159 414 Rep 6,803 Posts Drives: Project Estoril Join Date: Feb 2007 Location: Miami, FL iTrader: (31) Garage List 2013 335i M-sport [0.00] 2011 X5 xdrive35i M ... [0.00] 2009 335i M-sport [0.00] 07' 335i Sedan [0.00]	nice! __________________ '13 Estoril Blue 335i M-sport *Don't PM me!* Message me here- http://www.facebook.com/ProjectEstoril
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11-19-2008, 09:40 PM	#101
Gen_E92 Brigadier General 118 Rep 3,432 Posts Drives: slow Join Date: Oct 2006 Location: Vancouver iTrader: (17) Garage List 2007 335i [7.80]	Are you guys planning to release a quad version at the same time?
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11-19-2008, 09:43 PM	#102
Eric@AMS Captain 71 Rep 726 Posts Drives: 2007 335i Join Date: Sep 2008 Location: West Chicago, IL iTrader: (5)	We will release whatever version that makes the most power, fits the best and is the most cost effective to the customer. I personally think the single 3" that splits out to two tips in the back like the stock tips are set up is not only going to sound the best but produce just as much power as the true dual 2.5" Eric
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11-19-2008, 09:51 PM	#103
E82tt6 Colonel 103 Rep 2,626 Posts Drives: '08 Black Saphire Z4 MC Join Date: Oct 2007 Location: New Jersey iTrader: (0)	Curious to see the dynos. Are you doing the same for 135i? Exhaust is much more of a restriction on our car. __________________ '08 Black Saphire/Black Z4 M Coupe RIP Gretta: Blue Water/Lemon 135i. Died to save me. -ChuckV
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11-19-2008, 09:52 PM	#104
rubber_ducky Colonel 386 Rep 2,989 Posts Drives: roach coach Join Date: Feb 2007 Location: boston-ish iTrader: (21)	Quads are ok and all, but I can't help but feel as though it goes against the spirit of the exhaust. That being a lighter, less expensive, equally as powerful option compared to what's currently available. Quad tips mean a higher price (than dual), slightly heavier (than dual), and then you'll likely end up having to buy a diffuser to clean up the rear bumper (if the bumper is OE).
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11-19-2008, 10:15 PM	#106
scheherazade Major 36 Rep 1,467 Posts Drives: 09 GTR (& 93' accord!) Join Date: Sep 2008 Location: DC metro area iTrader: (8)	If two turbos, do split If one, do a single. If you do 2 pipes into 1 (via Y joint), make sure the sum cross section area of the two down pipes is smaller than the cross section area of the 3" pipe. (Keeps back pressure under control). Also, a single 3" pipe can be deeper sounding than twin 2.5" pipes. Larger diameter piping will resonate lower frequencies better. -scheherazade
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11-19-2008, 10:18 PM	#107
AlpineG05 hi 129 Rep 1,140 Posts Drives: Alpine White G05 Join Date: Feb 2008 Location: Bakersfield, Cali iTrader: (1)	looks good for sure and if it produces some good results i'm in. __________________ 2022 M Sport G05 Jb4, CTS catless dp, M performance exhaust, bms intake, IND goodies, Maxton kit
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11-20-2008, 07:10 AM	#108
Hallandale E92 Lieutenant 31 Rep 587 Posts Drives: 2007 335i Titanium Silver Join Date: Apr 2007 Location: Hallandale, Florida iTrader: (2)	my exhaust on my old car was UR down pipes into 3" piping into a collector into 3" single pipe into a muffler then it went to a "y" into dual tips. It sounded amazing unfortunatlry the people who built my exhaust went out of business. If you guys build an exhaust like this. I'm 1st on your list. Just make a quad option. There was no drone with this setup
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