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      02-19-2018, 04:36 PM   #1
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PE Mod on E92 335i questions

Hello I will be attempting to do the PE Mod on my car in a couple of days. A friend of mine with basic welding skills will be helping me out. My question is where exactly should we cut the axle back muffler to separate it from the car? I understand the process of getting the work done once it's not on the car. I am a little confused on where we should cut the exhaust and if we will be needing clamps to connect the muffler back to exhaust. Thanks
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      02-19-2018, 04:55 PM   #2
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There are a couple YouTube videos that show the entire process.
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      02-19-2018, 08:04 PM   #3
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There are a couple YouTube videos that show the entire process.
I haven't had luck finding the video. Every video I have seen the muffler is already on the floor getting worked on.
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      02-19-2018, 08:19 PM   #4
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I recommend cutting it back about half way, it's allows you to have more room to play and work around. As for welding it back on, I have a muffler shop do that for me. They connected both ends by sliding them into a slightly bigger piece of piping, and then they welded that shut. It gives it more of a reinforced hold.
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      02-20-2018, 03:48 AM   #5
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Why cut at all. Just takes more time and can lead to more issues. Just remove from the dp and lay it on a bench or the ground to weld. Just buy new gaskets and bolts for the dp connection

Last edited by Meatos; 02-20-2018 at 07:01 AM.
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      02-20-2018, 11:06 AM   #6
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Quote:
Originally Posted by Meatos View Post
Why cut at all. Just takes more time and can lead to more issues. Just remove from the dp and lay it on a bench or the ground to weld. Just buy new gaskets and bolts for the dp connection
PE mod is changing the inside of the mufflers.
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      02-20-2018, 12:16 PM   #7
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Quote:
Originally Posted by NoGuru View Post
PE mod is changing the inside of the mufflers.
Yes but that was not what he asked for. I have done it this way myself by taking the whole exhaust of, not by cutting off the exhaust just before the mufflers.
Takes much more time doing it that way. When you have it removed you do the pe mod by cuttting open the mufflers, but i did not change the stock piping for a solid pipe I just used exhaust wrap instead. Faster method and reversible also
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      02-20-2018, 02:07 PM   #8
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Quote:
Originally Posted by Meatos View Post
Yes but that was not what he asked for. I have done it this way myself by taking the whole exhaust of, not by cutting off the exhaust just before the mufflers.
Takes much more time doing it that way. When you have it removed you do the pe mod by cuttting open the mufflers, but i did not change the stock piping for a solid pipe I just used exhaust wrap instead. Faster method and reversible also
Ahh, you are correct. I misread it the first time.
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      02-20-2018, 08:01 PM   #9
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Quote:
Originally Posted by Meatos View Post
Why cut at all. Just takes more time and can lead to more issues. Just remove from the dp and lay it on a bench or the ground to weld. Just buy new gaskets and bolts for the dp connection
Cool thanks, I will attempt it that way. It seems time efficient as less welding is involved. Just waiting for the gasket to arrive now.
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