Autobahn Exotics exhaust - the best exhaust yet

judec · 04-08-2008, 05:46 PM

That's possible with OBDII based smog tests, but we use sniffers here, among visual inspection. And when the inspector sees no cats, followed by some strange outputs on the sniffer, U're done. So I need the secondary cats to be present physically and visible, while I dont need to care about primary DP cats, cuz those are not seen.

On the other hand I believe one set of cats is more than enough for the N54 to pass smog tests. I also believe the biggest restriction in terms of performance are the DP cats. So running with catless DPs + high flow secondary cats is OK also in terms of performance. Check out some of the dynos and reviews of RRDPs with stock exhaust, now consider replacing the sotck exhaust with a nice set of 2.5" mandrel bent pipes with HFCs... the performance loss compared to catless DP-back exhaust is negligible to me.

Nick@aep · 04-09-2008, 08:36 PM

^^ Exactly. Well said.

Mr. 5 · 04-11-2008, 06:16 PM

Guys,
I went by Autobahn to check out this exhaust a week ago and I'll tell you guys one thing...
This exhaust system is top notch!

The thing that really impressed me with this primary cat back system is that all of the sections were flanged with gaskets. No section is slip fit, which means there are no clamps with exhaust paste to deal with.

The way this thing sounded at idle was incredible. Nothing was overbearing or obtrusive by any means.
Since I had my daughter with me, we couldn't go for a spin, but I went back today.

Since I drive 100 miles a day on the freeway, one of the things that worry's me about exhaust systems is the drone. I've also understood from experience that the hotter the exhaust the more it is likely to drone.
Well, I made sure that we went for a lengthy ride and there was no disturbing drone at all. There was just only a nice deep sound.

Overall, the looks and sound of this exhaust system is very top notch and I'm stoked for autobahn for coming out with this system.
You guys are going to love it!

phattbam · 04-11-2008, 06:40 PM

TEASE!! I want it on my car already.

Gen_E92 · 04-11-2008, 06:44 PM

How's the DP coming along? And the secondary HFC?

lyjw88 · 04-12-2008, 07:39 PM

any pic of the full exhaust?

cgillio · 04-12-2008, 07:53 PM

Quote:

Originally Posted by lyjw88

any pic of the full exhaust?

+1

phattbam · 04-12-2008, 08:01 PM

just ship mine already.

tomtom · 04-12-2008, 08:50 PM

do you have the dyno charts? any other mods on the dyno'd car?

npb · 04-13-2008, 12:59 AM

Quote:

Originally Posted by Mr. 5

Guys,
I went by Autobahn to check out this exhaust a week ago and I'll tell you guys one thing...
This exhaust system is top notch!

The thing that really impressed me with this primary cat back system is that all of the sections were flanged with gaskets. No section is slip fit, which means there are no clamps with exhaust paste to deal with.

The way this thing sounded at idle was incredible. Nothing was overbearing or obtrusive by any means.
Since I had my daughter with me, we couldn't go for a spin, but I went back today.

Since I drive 100 miles a day on the freeway, one of the things that worry's me about exhaust systems is the drone. I've also understood from experience that the hotter the exhaust the more it is likely to drone.
Well, I made sure that we went for a lengthy ride and there was no disturbing drone at all. There was just only a nice deep sound.

Overall, the looks and sound of this exhaust system is very top notch and I'm stoked for autobahn for coming out with this system.
You guys are going to love it!

agreed!! i have also seen, heard, and experienced this exhaust and it is by far a superior product in every way. not sure if this has been mentioned yet, but each muffler is hand assembled. just another testament to the quality of this piece.

jpsimon · 04-13-2008, 09:18 PM

Quote:

Originally Posted by Mr. 5

Guys,
I went by Autobahn to check out this exhaust a week ago and I'll tell you guys one thing...
This exhaust system is top notch!

The thing that really impressed me with this primary cat back system is that all of the sections were flanged with gaskets. No section is slip fit, which means there are no clamps with exhaust paste to deal with.

The way this thing sounded at idle was incredible. Nothing was overbearing or obtrusive by any means.
Since I had my daughter with me, we couldn't go for a spin, but I went back today.

Since I drive 100 miles a day on the freeway, one of the things that worry's me about exhaust systems is the drone. I've also understood from experience that the hotter the exhaust the more it is likely to drone.
Well, I made sure that we went for a lengthy ride and there was no disturbing drone at all. There was just only a nice deep sound.

Overall, the looks and sound of this exhaust system is very top notch and I'm stoked for autobahn for coming out with this system.
You guys are going to love it!

Mr. 5 · 04-13-2008, 10:05 PM

Quote:

Originally Posted by npb

agreed!! i have also seen, heard, and experienced this exhaust and it is by far a superior product in every way. not sure if this has been mentioned yet, but each muffler is hand assembled. just another testament to the quality of this piece.

Wow, I didn't know that.

jpsimon · 04-13-2008, 10:10 PM

ya when we say these are hand built exhaust systems... we mean it

Quote:

Originally Posted by Mr. 5

Wow, I didn't know that.

e90AW335i · 04-13-2008, 10:11 PM

Quote:

Originally Posted by jpsimon

ya when we say these are hand built exhaust systems... we mean it

Whats the update of the e90 system?

phattbam · 04-13-2008, 11:05 PM

has mine been shipped yet

lyjw88 · 04-13-2008, 11:28 PM

Quote:

Originally Posted by phattbam

has mine been shipped yet

is it on sale already???

phattbam · 04-13-2008, 11:37 PM

Quote:

Originally Posted by lyjw88

is it on sale already???

not yet.. but soon. I just posted that because I'm impatient

BMWPower06 · 04-14-2008, 01:09 AM

Its a little too quiet for my tastes

jeho · 04-14-2008, 02:54 AM

how loud is this compared to eisenmann race exhaust and to sport exhaust?

phatr1s · 04-14-2008, 12:20 PM

Any updates? Pics?

jpsimon · 04-14-2008, 12:28 PM

new pictures will be posted the second the exhausts are done!

jeho · 04-14-2008, 12:59 PM

04-08-2008, 05:46 PM	#397
judec born to be turbocharged 24 Rep 1,347 Posts Drives: Not a bimmer yet Join Date: May 2007 Location: Slovakia iTrader: (0)	That's possible with OBDII based smog tests, but we use sniffers here, among visual inspection. And when the inspector sees no cats, followed by some strange outputs on the sniffer, U're done. So I need the secondary cats to be present physically and visible, while I dont need to care about primary DP cats, cuz those are not seen. On the other hand I believe one set of cats is more than enough for the N54 to pass smog tests. I also believe the biggest restriction in terms of performance are the DP cats. So running with catless DPs + high flow secondary cats is OK also in terms of performance. Check out some of the dynos and reviews of RRDPs with stock exhaust, now consider replacing the sotck exhaust with a nice set of 2.5" mandrel bent pipes with HFCs... the performance loss compared to catless DP-back exhaust is negligible to me. __________________ Disclaimer: All this message was written with recycled electrons.
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04-09-2008, 08:36 PM	#398
Nick@aep Team Zissou 140 Rep 1,426 Posts Drives: Past: E92 335i 6mt, 996 GT2 Join Date: Jan 2008 Location: Orange County, CA iTrader: (6)	^^ Exactly. Well said. __________________ Formerly Known As: Nick@AEPerformance Drive ALL Out Foundation
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04-11-2008, 06:16 PM	#399
Mr. 5 Modder Raider 844 Rep 8,633 Posts Drives: M3 Join Date: Apr 2007 Location: Surf City, HB iTrader: (31) Garage List 2007 e90 335i [8.00]	Guys, I went by Autobahn to check out this exhaust a week ago and I'll tell you guys one thing... This exhaust system is top notch! The thing that really impressed me with this primary cat back system is that all of the sections were flanged with gaskets. No section is slip fit, which means there are no clamps with exhaust paste to deal with. The way this thing sounded at idle was incredible. Nothing was overbearing or obtrusive by any means. Since I had my daughter with me, we couldn't go for a spin, but I went back today. Since I drive 100 miles a day on the freeway, one of the things that worry's me about exhaust systems is the drone. I've also understood from experience that the hotter the exhaust the more it is likely to drone. Well, I made sure that we went for a lengthy ride and there was no disturbing drone at all. There was just only a nice deep sound. Overall, the looks and sound of this exhaust system is very top notch and I'm stoked for autobahn for coming out with this system. You guys are going to love it! __________________ e36 M3 Coupe, e36 325i Sedan e90 335i--SOLD Best 60-130-------------9.15 Seconds------------------WWW.MR5RACING.COM
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04-11-2008, 06:40 PM	#400
phattbam Major General 183 Rep 5,817 Posts Drives: '17 Protonic Blue i3 REx Join Date: Sep 2007 Location: sf area iTrader: (21)	TEASE!! I want it on my car already.
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04-11-2008, 06:44 PM	#401
Gen_E92 Brigadier General 121 Rep 3,430 Posts Drives: slow Join Date: Oct 2006 Location: Vancouver iTrader: (17) Garage List 2007 335i [7.80]	How's the DP coming along? And the secondary HFC? Last edited by Gen_E92; 04-11-2008 at 09:31 PM..
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04-12-2008, 07:39 PM	#402
lyjw88 Major 242 Rep 1,414 Posts Drives: C63S & X3MC Join Date: Dec 2006 Location: Boston iTrader: (6)	any pic of the full exhaust?
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04-12-2008, 08:01 PM	#404
phattbam Major General 183 Rep 5,817 Posts Drives: '17 Protonic Blue i3 REx Join Date: Sep 2007 Location: sf area iTrader: (21)	just ship mine already.
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04-12-2008, 08:50 PM	#405
tomtom Captain 58 Rep 986 Posts Drives: e92 335i Join Date: Jan 2008 Location: ontario iTrader: (4)	do you have the dyno charts? any other mods on the dyno'd car?
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04-13-2008, 11:05 PM	#411
phattbam Major General 183 Rep 5,817 Posts Drives: '17 Protonic Blue i3 REx Join Date: Sep 2007 Location: sf area iTrader: (21)	has mine been shipped yet
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04-14-2008, 01:09 AM	#414
BMWPower06 A^M=G is nothing w/o the Power of ///M 173 Rep 1,817 Posts Drives: ///M5 & ///M3 Join Date: Jan 2007 Location: Washington D.C. iTrader: (0)	Its a little too quiet for my tastes __________________ Indianapolis Red BMW ///M5
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04-14-2008, 02:54 AM	#415
jeho ig: jeffersonho 158 Rep 2,187 Posts Drives: E90M3.E36M3 Join Date: Mar 2008 Location: PNW iTrader: (6)	how loud is this compared to eisenmann race exhaust and to sport exhaust? __________________ E36 M3 on TE37SL E90 M3 on TE37SL http://instagram.com/jeffersonho
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04-14-2008, 12:20 PM	#416
phatr1s First Lieutenant 33 Rep 363 Posts Drives: M4 Join Date: Mar 2007 Location: TX iTrader: (1) Garage List 2007 335i [0.00] 2007 335i [0.00] 2007 335i [0.00]	Any updates? Pics?
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04-14-2008, 12:28 PM	#417
jpsimon Team Zissou 3200 Rep 10,200 Posts Drives: 2022 AWD M3 Comp - SMB Join Date: Dec 2006 Location: CT iTrader: (7)	new pictures will be posted the second the exhausts are done!
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04-14-2008, 12:59 PM	#418
jeho ig: jeffersonho 158 Rep 2,187 Posts Drives: E90M3.E36M3 Join Date: Mar 2008 Location: PNW iTrader: (6)	more video clips __________________ E36 M3 on TE37SL E90 M3 on TE37SL http://instagram.com/jeffersonho
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