Cracked stock muffler

[RichBunch2]

Originally Posted by tom @ eas

Please follow up on what replacement you're provided with. All MPEs we've seen get the v2 with added reinforcement brackets, curious to know if the same applies to GTS:

Will advise. Part not in until 21st.
Crank hub done. Picking up car tomorrow

[CanAutM3]

Originally Posted by allinon72

A security failure point that has the potential to destroy the engine, designed on purpose? No way.

There's a difference between "potentially destroy" and "will for sure destroy".

The design itself is clearly suggests it is meant to "spin" under excessive force as the result of an over-acceleration. Why would they designed it that way otherwise?

Anyhow, enough of this .

[RichBunch2]

Well, the new muffler is on. Externally, it doesn't look any different other than it's new and shinny. Def didn't have any new support brackets. Going to have to get the tips blue again Monday at the track!!

[tom @ eas]

Bummer there's no brackets, but at least it was replaced. Thanks for the update.

[CanAutM3]

Originally Posted by ///M///

I was responding to CanAutm3 in reference to the stock CS hub vs a stock standard M3/4 hub. My point was that if a stock CS hub is the same as a stock standard m3/4 hub, the stage 1 tune on a standard F8X should not affect the hub as the added power is around the same as as a stock CS. Hope that makes sense.

As far as I know all S55 variants share the same crank hub.

My understanding is that it is not how much power the engine makes nor the redline, but rather it is how fast the engine is accelerated that gets the crank hub to spin.

[RichBunch2]

Old muffler. Was cracked before I blue'd it
Kind of interesting that the muffler turned blue as well as the pipes. I though when the flaps were open in Sport/+ everything was routed straight out. Guess some still travels through the muffler.

[allinon72]

Something isn't right...maybe someone can correct me but I've never seen that much bluing. That exhaust was extremely hot for long periods of time.

[Bluer2]

Originally Posted by RichBunch2

Old muffler. Was cracked before I blue'd it
Kind of interesting that the muffler turned blue as well as the pipes. I though when the flaps were open in Sport/+ everything was routed straight out. Guess some still travels through the muffler.

hey man is that cracked GTS muffler for sale? or did BMW take it from you? I'm interested in buying it.

[CanAutM3]

Originally Posted by allinon72

Something isn't right...maybe someone can correct me but I've never seen that much bluing. That exhaust was extremely hot for long periods of time.

That pic tells me that GTS was used as intended .

The more one tracks their car, the bluer it will become. You should have seen the MPE on my old 2015 M4 .

[allinon72]

Originally Posted by CanAutM3

That pic tells me that GTS was used as intended .

The more one tracks their car, the bluer it will become. You should have seen the MPE on my old 2015 M4 .

Fair enough

[RichBunch2]

Originally Posted by allinon72

Fair enough

Used as intended for sure! I only had 4 days on it too. Got some work to do on the new muffler

BMW took the old muffler because it was a warranty item.

[M4_GTS]

I doubt bmw will update the gts muffler with the new design (reinforced brackets) there's only so many gts out there and our warranty is running out in a year or two anyways.

[melvyn]

Is the GTS exhaust system a full titanium from down pipes,or same as MPE but with titanium pipes .

[RichBunch2]

Originally Posted by melvyn

Is the GTS exhaust system a full titanium from down pipes,or same as MPE but with titanium pipes .

Not sure about the full system. The muffler is titanium

[melvyn]

Originally Posted by RichBunch2

Not sure about the full system. The muffler is titanium

Thanks

Just cracked my MPE, it will be a warranty claim.I was just weighing up my options as to go back to Akra or maybe try and get hold of the GTS exhaust if it was full titanium system.

[RichBunch2]

Originally Posted by melvyn

Thanks

Just cracked my MPE, it will be a warranty claim.I was just weighing up my options as to go back to Akra or maybe try and get hold of the GTS exhaust if it was full titanium system.

Someone told me, but I have not verified, that Akra makes the GTS exhaust. Not sure if that's correct or not but might be worth researching.

[melvyn]

Originally Posted by RichBunch2

Someone told me, but I have not verified, that Akra makes the GTS exhaust. Not sure if that's correct or not but might be worth researching.

Thanks

If they do , you will see the Akra stamp and BM stamp, like on the MPE for the F10 M5 and F13 M6.
Will be talking to dealer tomorrow , for options.Cheers.

[RichBunch2]

Well, I'm doing my best to get the new muffler/tips blue! The process is quite fun. I highly recommend it!

[danniexi]

Originally Posted by RichBunch2

Someone told me, but I have not verified, that Akra makes the GTS exhaust. Not sure if that's correct or not but might be worth researching.

GTS and MPE is made by Eberspächer Prototechnik GmbH. Definitely a BMW M design.

If it were made by Akrapovic the exhaust would be made in Slovenia, which it is not.