Eisenmann Race Exhaust for Sale

E90Boy · 06-02-2006, 05:08 PM

Hunter399 · 06-02-2006, 06:48 PM

I have only great things to say about Eisenmann

Ryan is a great guy

I am 100% happy with Eisenhaus

PAKMAN · 06-05-2006, 01:37 AM

i am thinkin on buying can u gime more info?

aapriadi · 06-05-2006, 01:41 AM

PM sent like days ago, no replies yet haha

sunchild · 06-05-2006, 02:17 AM

i hear the thing closes for torque... on the 330 exhaust

Ryan.M · 06-05-2006, 04:33 PM

Quote:

Originally Posted by sunchild

i hear the thing closes for torque... on the 330 exhaust

Not true...

ksfrogman · 06-05-2006, 04:56 PM

Quote:

Originally Posted by sunchild

i hear the thing closes for torque... on the 330 exhaust

Quote:

Originally Posted by RYANM330CI

Not true...

The question of "what is the exhaust valve for?" has received so many different answers. The three answers I have received are:

(1) It modulates sound quality
(2) It closes at certain RPMs to attenuate the backpressure under conditions that would optimize torque.
(3) The combination of (1) and (2)

What Ryan at Eisenhaus said may be true. I honestly don't know the answer, because I need some objective proof. I am going to find out for myself once and for all.

I will run 3 Dyno pulls with my 330i, then I will disconnect and plug the line to the valve solenoid, and test again. I will post the results.

I also want to investigate ways to objectively quantitate the sound quality. This may prove to be difficult since I don't have a huge sound chamber with a decible meter. Anyone with ideas, please chime in.

Lastly, I will connect a vacuum gauge to the exhaust valve tubing via T-connector and see at what RPM the valve actually closes and reopens.

warot · 06-05-2006, 09:21 PM

Quote:

Originally Posted by ksfrogman

The question of "what is the exhaust valve for?" has received so many different answers. The three answers I have received are:

(1) It modulates sound quality
(2) It closes at certain RPMs to attenuate the backpressure under conditions that would optimize torque.
(3) The combination of (1) and (2)

What Ryan at Eisenhaus said may be true. I honestly don't know the answer, because I need some objective proof. I am going to find out for myself once and for all.

I will run 3 Dyno pulls with my 330i, then I will disconnect and plug the line to the valve solenoid, and test again. I will post the results.

I also want to investigate ways to objectively quantitate the sound quality. This may prove to be difficult since I don't have a huge sound chamber with a decible meter. Anyone with ideas, please chime in.

Lastly, I will connect a vacuum gauge to the exhaust valve tubing via T-connector and see at what RPM the valve actually closes and reopens.

Not a regular member here, but was reading through. The valve opens only in second gear onwards from around 3000 rpm, but I'm not 100 percent sure about the rpm. This is for acoustic purposes only (think of a trumpet) and torque isn't affected.

P.S. I had an internship at BMW SA in the acoustic section, that's how I know.

Ryan.M · 06-05-2006, 09:46 PM

Quote:

Originally Posted by warot

Not a regular member here, but was reading through. The valve opens only in second gear onwards from around 3000 rpm, but I'm not 100 percent sure about the rpm. This is for acoustic purposes only (think of a trumpet) and torque isn't affected.

P.S. I had an internship at BMW SA in the acoustic section, that's how I know.

You are right on the money

Some of you may not know this but I also work for Patrick BMW. I have been to BMWNA for some classes and they stated that the valve does not affect hp/tq

Cheers

ksfrogman · 06-06-2006, 12:16 AM

Quote:

Originally Posted by warot

Not a regular member here, but was reading through. The valve opens only in second gear onwards from around 3000 rpm, but I'm not 100 percent sure about the rpm. This is for acoustic purposes only (think of a trumpet) and torque isn't affected.

P.S. I had an internship at BMW SA in the acoustic section, that's how I know.

Quote:

Originally Posted by RYANM330CI

You are right on the money

Some of you may not know this but I also work for Patrick BMW. I have been to BMWNA for some classes and they stated that the valve does not affect hp/tq

Cheers

That's great info. Thanks!

A lot of companies do invest significant thought and engineering into the sound quality of their vehicles. I read somewhere that the current generation Mustang exhaust note was designed to emulate the modified 1968 Mustang featured in Bullitt. Nissan significantly engineered the exhaust sound of their current 3.5L V6 in the 350Z, G35 and FX35.

The Eisenmann and Kerscher exhaust systems actual sound good. They do not make the E90 sound like a boat (too loud and low pitched), a common problem with the in-line sixes with custom exhausts. The 4-bangers sound even worse (think of modified Hondas, WRXs and Evols).

warot · 06-06-2006, 12:57 AM

Sorry, typo. What I meant to say was that it closes, not open

ksfrogman · 06-06-2006, 01:02 AM

Quote:

Originally Posted by warot

Sorry, typo. What I meant to say was that it closes, not open

Right, I know what you meant.

Driv3r · 06-06-2006, 09:52 PM

i have eisenmann race and i ended up just welding it, just to be 100% sure no leaks... either way is ok.

RichP · 06-08-2006, 09:47 PM

still for sale guys!

aapriadi · 06-08-2006, 11:43 PM

dude, i've sent u a pm like long ago...u didnt get it?

RichP · 06-09-2006, 07:26 AM

Quote:

Originally Posted by aapriadi

dude, i've sent u a pm like long ago...u didnt get it?

I have no idea why I didnt see it; I just replied.

06-02-2006, 05:08 PM	#23
E90Boy Captain 36 Rep 674 Posts Drives: 14 F33 Join Date: Aug 2005 Location: Boston iTrader: (4)
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06-02-2006, 06:48 PM	#24
Hunter399 Major General 335 Rep 8,088 Posts Drives: F90M5 Join Date: Apr 2005 Location: Houston, TX iTrader: (33)	I have only great things to say about Eisenmann Ryan is a great guy I am 100% happy with Eisenhaus
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06-05-2006, 01:37 AM	#25
PAKMAN Lieutenant General 366 Rep 16,214 Posts Drives: 2011 E92 M3 Join Date: May 2006 Location: NORTHERN CALIFORNIA iTrader: (35) Garage List 2011 BMW E92 M3 [9.50] 2006 e90 330i [5.50]	i am thinkin on buying can u gime more info?
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06-05-2006, 01:41 AM	#26
aapriadi Colonel 200 Rep 2,068 Posts Drives: '13 F30 AW 320i Join Date: Aug 2005 Location: Jakarta, Indonesia iTrader: (10)	PM sent like days ago, no replies yet haha __________________ mod = crack
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06-05-2006, 02:17 AM	#27
sunchild Lieutenant 27 Rep 469 Posts Drives: 2006 BMW 330i Join Date: Aug 2005 Location: Orange County, CAL iTrader: (2)	i hear the thing closes for torque... on the 330 exhaust
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06-06-2006, 12:57 AM	#33
warot New Member 0 Rep 15 Posts Drives: E-japan-9-red-0 Join Date: Oct 2005 Location: VA iTrader: (0)	Sorry, typo. What I meant to say was that it closes, not open
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06-06-2006, 09:52 PM	#35
Driv3r Colonel 178 Rep 2,355 Posts Drives: 2006 E46 M3 ZCP Join Date: May 2005 Location: Miami Beach, FL iTrader: (8) Garage List 2006 325i [0.00]	i have eisenmann race and i ended up just welding it, just to be 100% sure no leaks... either way is ok. __________________ 2006 E46 M3 ZCP 6SPD-Interlagos Blue - 6SPD - SSK - AA Headers -AA Tune - Navigation w/ Splashscreen Mod - 3M Crystalline Series 60 - Carbon Splitters - Swissvax Treated - Bridgestone 2012 Yamaha FZ8 - Matte Black/Grey - Michelin Pilot Pure 2CT - Vortex Rear Sets - Yoshimura R-77D & Fender Delete - Spectro Race Oil - GP Reverse Shifting
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06-08-2006, 09:47 PM	#36
RichP Major 170 Rep 1,189 Posts Drives: F80 Join Date: Jul 2005 Location: CT iTrader: (4)	still for sale guys!
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06-08-2006, 11:43 PM	#37
aapriadi Colonel 200 Rep 2,068 Posts Drives: '13 F30 AW 320i Join Date: Aug 2005 Location: Jakarta, Indonesia iTrader: (10)	dude, i've sent u a pm like long ago...u didnt get it? __________________ mod = crack
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