For all those who have done the "PE Mod"...

SINGH_ · 10-16-2014, 06:14 PM

I'm planning on hacking open the exhaust on my e92 and have a few questions before I dive in. I'm planning on just "straight piping" the straight sections, not all 4 perforated pipes.

Some images I found showed a cat. shaped section on the driver side muffler, what is the purpose of this piece? Does it exist on both E90/E91 or is it just found on E92/E93s? Should it also be straight piped?

Also, does both the top and the bottom of each muffler need to cut to gain access? (What if someone was to cut a section of pipe similar to a "roll pin", cut the hidden side of the mufflers open, wrapped it around the existing pipe, and welded it in place?)

jwilliams · 10-16-2014, 06:36 PM

Do it just like the PE exhaust mod thread says.

SINGH_ · 10-16-2014, 07:38 PM

All 64 Pages...

Digitalism · 10-16-2014, 07:59 PM

Are you sure you read it properly?

I don't think it said to remove all 4 perforated pipes. I am sure it said to just replace the straight pipes with solid pipes as you are planning to do.

The cat shaped section in the muffler is a resonator, you need to remove it if it is present.

jwilliams · 10-17-2014, 04:16 PM

^^+1. Yes all 64 pages. Just like every one else did that was interested in the mod.

Cut the top side of the exhaust box's open. Locate the 2 straight pipes. 1 with resonator and 1 with perforated pipe. Replace both of these pipes with solid pipes. Add tips and away you go.

10-16-2014, 06:14 PM	#1
SINGH_ N54 E92 51 Rep 342 Posts Drives: 2009 BMW 335i Join Date: Nov 2013 Location: Nor Cal iTrader: (1)	For all those who have done the "PE Mod"... I'm planning on hacking open the exhaust on my e92 and have a few questions before I dive in. I'm planning on just "straight piping" the straight sections, not all 4 perforated pipes. Some images I found showed a cat. shaped section on the driver side muffler, what is the purpose of this piece? Does it exist on both E90/E91 or is it just found on E92/E93s? Should it also be straight piped? Also, does both the top and the bottom of each muffler need to cut to gain access? (What if someone was to cut a section of pipe similar to a "roll pin", cut the hidden side of the mufflers open, wrapped it around the existing pipe, and welded it in place?) __________________ Light Bolt-ons, Tunes, & Methanol Injection: 12.30 @ 115mph [2.0 60ft on Street Tires] [91 Octane] 1.59 Seconds Faster than Stock [as of 05/29/2014] Previous Vehicle: '65 Chevelle [LSx 6.0L/4L80e]
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10-16-2014, 06:36 PM	#2
jwilliams Lieutenant 146 Rep 563 Posts Drives: 3 series Join Date: Jul 2014 Location: harlow iTrader: (1)	Do it just like the PE exhaust mod thread says.
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10-16-2014, 07:38 PM	#3
SINGH_ N54 E92 51 Rep 342 Posts Drives: 2009 BMW 335i Join Date: Nov 2013 Location: Nor Cal iTrader: (1)	All 64 Pages...
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10-16-2014, 07:59 PM	#4
Digitalism Lieutenant 53 Rep 398 Posts Drives: BMW 335i Join Date: Jul 2013 Location: Perth, Australia iTrader: (0)	Are you sure you read it properly? I don't think it said to remove all 4 perforated pipes. I am sure it said to just replace the straight pipes with solid pipes as you are planning to do. The cat shaped section in the muffler is a resonator, you need to remove it if it is present.
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10-17-2014, 04:16 PM	#5
jwilliams Lieutenant 146 Rep 563 Posts Drives: 3 series Join Date: Jul 2014 Location: harlow iTrader: (1)	^^+1. Yes all 64 pages. Just like every one else did that was interested in the mod. Cut the top side of the exhaust box's open. Locate the 2 straight pipes. 1 with resonator and 1 with perforated pipe. Replace both of these pipes with solid pipes. Add tips and away you go.
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