Dual exhaust HELP

mmmnot · 07-21-2016, 10:39 AM

Quote:

Originally Posted by Mike.

Hmm, I think you're the first person to ever do this, you should just search though just to make sure.

"Damn really"

Literally tearing up in the office holding back from busting out laughing.

Needed this.

Mike. · 07-21-2016, 10:47 AM

Quote:

Originally Posted by mmmnot

Quote:

Originally Posted by Mike.

Hmm, I think you're the first person to ever do this, you should just search though just to make sure.

"Damn really"

Literally tearing up in the office holding back from busting out laughing.

Needed this.

Hey dude my pleasure!! Hahaha

Get that Rolex??

JuniorB · 07-21-2016, 01:29 PM

If you think you have the skills,is do it,I was looking to swap a 535 exhaust on my car as an upgrade seeing the n54 cars are bigger in diameter, but the loss of torque would be gained in hp. I still say go for it

RuinE90d · 07-25-2016, 10:20 PM

So I measured the M4 pipes today... They are 2.5" OD like the AFe mid pipes some are running. Considering that, I don't think the dual would be that inefficient. Especially if I cut out the muffler and make the smaller pipe the primary exit (I.e. Tune with the actuator bypass valves).

I'm going to check a few more numbers and see how much it would cost me to make this bolt to the headers. Comparing the stock exhaust I think it will be around $200 +welding time. I might do it just for a lighter weight track exhaust.

I really appreciate those who make the forum a community for discussion.

07-21-2016, 01:29 PM	#25
JuniorB Major 188 Rep 1,017 Posts Drives: 07 e60 525 N54 Join Date: Mar 2016 Location: Rhode Island iTrader: (0)	If you think you have the skills,is do it,I was looking to swap a 535 exhaust on my car as an upgrade seeing the n54 cars are bigger in diameter, but the loss of torque would be gained in hp. I still say go for it
	Appreciate 0 Quote

07-25-2016, 10:20 PM	#26
RuinE90d Private 63 Rep 89 Posts Drives: '06 330i Sport 6MT Join Date: Nov 2015 Location: Knoxville, TN iTrader: (0)	So I measured the M4 pipes today... They are 2.5" OD like the AFe mid pipes some are running. Considering that, I don't think the dual would be that inefficient. Especially if I cut out the muffler and make the smaller pipe the primary exit (I.e. Tune with the actuator bypass valves). I'm going to check a few more numbers and see how much it would cost me to make this bolt to the headers. Comparing the stock exhaust I think it will be around $200 +welding time. I might do it just for a lighter weight track exhaust. I really appreciate those who make the forum a community for discussion.
	Appreciate 0 Quote