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      11-30-2019, 10:35 AM   #52
13M5F10
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Drives: 2013 BMW M5 | MSR Stage 3
Join Date: Jun 2015
Location: Las Colinas, TX

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Quote:
Originally Posted by E93M3ofSFL View Post
Quote:
Originally Posted by 13M5F10 View Post
I recently installed Catless Downpipes that was coupled with the Turner Muffler Delete and stock resonators and I found the car had this very high pitched raspiness to it. The cabin drone was too loud and not tolerable for passengers so I went on a mission to find an exhaust system to replace my turner with but before doing that, I had this suspicion that my stock resonators may be the culprit to the high pitched raspiness so I decided to fit on a Magnaflow resonated X pipe and I am amazed. I got the idea from my ZL1 that when had aftermarket headers added, it was extremely loud and the MF R X pipe made a huge difference.

I will follow up with more videos but here are some comparisons.

In cabin noise is practically gone unless WOT and it's still very quiet and the noise is behind you rather than inside the cabin resonating. It sounds so much quieter than stock while cruising yet outside the car still sounds beastly. There is practically no drone compare do before. The noise now is much more deeper and refined compared to any other system I've heard. Hard to explain.

PN Magnaflow 11386 Stainless Steel 2.5" Oval Muffler - Fabrication had to be done to go 3" OEM piping to 2.5" and back out or use a 2.5 to 3" adapter. So far no performance issues.

MCarsFan drove my car yesterday and fell in love.

Catless DP | Muffler Delete | Magnaflow Resonated X Pipe


Catless DP | Muffler Delete



OEM Down Pipes | Turner Muffler Delete
Bringing this thread back since after reading this sounds like a great idea ...

I found this part :


MagnaFlow Performance Mufflers 12469

Which is the same resonated X pipe as the OP except that in/out are also 3" instead of 2.5" , would this be a better fit ? Sound wise ?? Any comments /advice will be appreciated...

Regards
You'll want to stick with 3" in and out. Make sure you replace both the X pipe and resonators with this. I made the Initial mistake going 2.5" since that was all that was available and didn't know they didn't cut out my x pipes till later. This replaces both.

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*** SOLD *** 2013 BMW M5 | Space Grey | MSR Stage 3 Tune | Catless Downpipes | MSR Intake and Charge Pipes | MSR Exhaust (Prototype) | Vorsteiner Rear Diffuser | RW Carbon Front Lip | RW Carbon Trunk Spoiler| Vorsteiner VS-310 Forged Wheels | Escort 9500CI w/Laser Jammers
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