N54Tech.com - International Turbo Racing Discussion
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BeatupVR4 BeatupVR4 is offline
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Car: 2003 Forester
Default 07-22-2020, 11:17 AM

I'm not even sure if a forum specifically for E60 exhaust even exists. Did you mean thread? The thread is the individual conversation thread started by the original posters (OP) post.

This forum is for N54's in general usually accompanied by some sort of JB4 content. Mostly E90's here really.

Try 5series.net?

I also own an E60 and can say the stock exhaust is more like dual 2.5" to 3.5" for a bit over the rear diff then back to a twin 2.5ish with the dual mufflers. You will definitely not want to run just that one muffler.
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colewilson12 colewilson12 is offline
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Car: 2008 535i
Default 07-24-2020, 08:53 AM

Ah so the inlet on the stock muffler is 2.5"? And yeah eventually I will run a true dual set up.
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Maximum996 Maximum996 is offline
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Car: 08 535xi
Default 07-24-2020, 01:43 PM

The inlet will be 3.5 inch if you remove stock muffler, coming out of stock resonator is a fat 3.5 inch pipe, I have a vibrant muffler 3.5 inch inlet


08 535Xi - jb4 iso w/mhd flash, Bms dci, AR ********* DP, er cp with forge dv, second *** delete, muffler delete, xhp trans flash, ets fmic, bms oil tstat bypass.
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