ISF Exhaust?

Red_Baron · 05-05-2012, 12:38 PM

So I was able to test drive a stock ISF today and I noticed that once the car was moving at around 65-75 MPH the exhaust note changes and gets really deep and loud to point where I could feel it in my ears. I'm just wondering what makes this happen and I could get a similar effect with an M3.

brandonwuwux3 · 05-05-2012, 01:18 PM

its the intake when you hit a certain rpm in the isf

Team Plutonium · 05-05-2012, 02:52 PM

Just get an Eisenmann Race... you'll feel that one from the get-go.

M3Denver · 05-05-2012, 10:55 PM

Quote:

Originally Posted by lthai

So I was able to test drive a stock ISF today and I noticed that once the car was moving at around 65-75 MPH the exhaust note changes and gets really deep and loud to point where I could feel it in my ears. I'm just wondering what makes this happen and I could get a similar effect with an M3.

That and the pipes in
The back are fake ....

eVitO · 05-06-2012, 01:47 PM

Quote:

Originally Posted by M3Denver

That and the pipes in
The back are fake ....

You're an idiot.

M3Denver · 05-07-2012, 07:17 AM

Quote:

Originally Posted by eVitO

Quote:

Originally Posted by M3Denver

That and the pipes in
The back are fake ....

You're an idiot.

Is it not true the dual tips are not real dual tips ? And a couple of the tips do not got the exhaust piping? Or did they fix this ?

M3PO · 05-07-2012, 03:31 PM

The IS-F still has two fake tips. Two of the tips are fake on my Dinan exhaust, who cares.

My guess for the boomy-ness of the IS-F exhaust is that the 8-speed in that car tends to upshift to high gears at lower than ideal speeds which puts you on the borderline of lugging the car.

Robmaster · 05-08-2012, 02:32 AM

Quote:

Originally Posted by M3Denver

Is it not true the dual tips are not real dual tips ? And a couple of the tips do not got the exhaust piping? Or did they fix this ?

i think you mean the Dinan exhaust.

the Eisenmann tips are ALL functional. no fake or some shit in there.

saeedg48 · 05-08-2012, 02:33 AM

it's a rpm sensitive valvetronic system.

Red_Baron · 05-08-2012, 04:48 PM

Quote:

Originally Posted by saeedg48

it's a rpm sensitive valvetronic system.

Quote:

Originally Posted by brandonwuwux3

its the intake when you hit a certain rpm in the isf

Do you guys know of any aftermarket parts for the M3 that can do this?

SchnellM3 · 05-09-2012, 07:36 PM

Quote:

Originally Posted by lthai

Do you guys know of any aftermarket parts for the M3 that can do this?

Innotech, Kreissieg, Evolve

Here are some videos of my IPE, all with the valves open....

Jaypod · 05-09-2012, 07:46 PM

^^^ nice - I kept waiting for take off

mountainste · 05-09-2012, 09:20 PM

Two of the tips are fake on my Dinan exhaust

JS11 · 05-10-2012, 10:32 AM

Quote:

Originally Posted by Robmaster

i think you mean the Dinan exhaust.

the Eisenmann tips are ALL functional. no fake or some shit in there.

he's talking about the isf exhaust

mmm def · 05-10-2012, 01:10 PM

man would i love to take my car on a runway.

05-05-2012, 12:38 PM	#1
Red_Baron M3Post DBag Drives: '08 e92 M3, '11 G55 AMG Join Date: Dec 2011 Location: DC/VA/PA Posts: 701 iTrader: (0)	ISF Exhaust? So I was able to test drive a stock ISF today and I noticed that once the car was moving at around 65-75 MPH the exhaust note changes and gets really deep and loud to point where I could feel it in my ears. I'm just wondering what makes this happen and I could get a similar effect with an M3. __________________
	Tweet

05-05-2012, 02:52 PM	#3
Team Plutonium Major General Drives: 911 Join Date: Dec 2007 Location: Upstate Posts: 8,526 iTrader: (1)	Just get an Eisenmann Race... you'll feel that one from the get-go. __________________ Gone... ESS VT2-625 \| ESS Tune \| M24 Oil Cooler \| Brembo 380mm BBK \| Dinan 4.10 Diff \| KW Variant 3 Coilovers \| Dinan Camber Plates \| Dinan Strut Tower Braces \| Dinan X-Pipe \| Akrapovic Exhaust \| Vorsteiner GTS3 Bumper \| Varis System One Diffuser \| OEM Performance Spoiler \| Stack Gauges \| GTS Door Sills \| Volk TE37 \| Falken Azenis RT615K 275/315 \| Pulled Fenders \| Turner Stud Kit \| OMP ARS Racing Seats New: 991C2S

05-07-2012, 03:31 PM	#7
M3PO Colonel Drives: '08 IB E92 Join Date: Sep 2011 Location: OC Posts: 2,192 iTrader: (6)	The IS-F still has two fake tips. Two of the tips are fake on my Dinan exhaust, who cares. My guess for the boomy-ness of the IS-F exhaust is that the 8-speed in that car tends to upshift to high gears at lower than ideal speeds which puts you on the borderline of lugging the car. __________________ 2008 IB E92 M3\| BBS \| KW \| Arkym \| Platte Forme A.G. \| Active Autowerke \| K&N \| Fabspeed \| Dinan \| Evolve-R

05-08-2012, 02:33 AM	#9
saeedg48 Brigadier General Drives: 2008 6MT E90 M3 & 2012 CLS63 P Join Date: Nov 2008 Location: Unknown Posts: 3,354 iTrader: (1)	it's a rpm sensitive valvetronic system. __________________ _______________

05-09-2012, 09:20 PM	#13
mountainste New Member Drives: auto Join Date: May 2012 Location: foy Posts: 9 iTrader: (0)	Two of the tips are fake on my Dinan exhaust __________________

05-05-2012, 01:18 PM	#2
brandonwuwux3 Captain Drives: Jet black E92 m3 DCT Join Date: Jul 2010 Location: SOCAL 626 Posts: 625 iTrader: (2)	its the intake when you hit a certain rpm in the isf

05-09-2012, 07:46 PM	#12
Jaypod BimmerPost Supporting Vendor Drives: Frozen M3 Join Date: Nov 2008 Location: Toronto Posts: 4,681 iTrader: (7)	^^^ nice - I kept waiting for take off

05-10-2012, 01:10 PM	#15
mmm def Colonel Drives: 07 Accord 6-6 Join Date: Dec 2006 Location: NJ Posts: 2,535 iTrader: (0)	man would i love to take my car on a runway.

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