[altaaf999]

by any chance do you have a picture of your fabrication adaptor part... how do I explain to muffler shop what exactly it is that I need... like I explained them the situation but they said to send all details thar are necessary - eg dimensions measurements etc.... please send me the details that you would use for yours and I will see if the same thing applies to me... thank you

[TurboM]

Originally Posted by altaaf999

by any chance do you have a picture of your fabrication adaptor part... how do I explain to muffler shop what exactly it is that I need... like I explained them the situation but they said to send all details thar are necessary - eg dimensions measurements etc.... please send me the details that you would use for yours and I will see if the same thing applies to me... thank you

I don't unfortunately as it is installed on my car and you cannot see it. It is literally just a piece of metal pipe welded to the end of the muffler inlet. Its purpose was to align the new muffler to the rest of the exhaust so it could be clamped together in the correct position. Not rocket science, ANY muffler shop should be able to do this in less than an hour without any planning (assuming they have a small piece of the correct diameter piping to be used for the "adaptor").

[EstorilVic]

sweet

[exclusivo]

I just got mine done, my shop welded mine which I was fine with for 75 bucks. We noticed that the tips did not line up evenly, the right tip is inwards, and the left tip stuck out a bit. After trying different ways to getting them to line up, I told them to just bolt it up to the stock position, and I'll order some 3.5 tips to weld on so everything can be even.

I am very happy with the sound as I get that V6 sound I used to get out of my e90. The only thing I am wondering about is, I am hearing a blow off valve type sound when revving, but from what Ive read, our cars dont have a blow off valve, so is this sound normal or could there be something wrong with the weld?

[TurboM]

Originally Posted by exclusivo

I just got mine done, my shop welded mine which I was fine with for 75 bucks. We noticed that the tips did not line up evenly, the right tip is inwards, and the left tip stuck out a bit. After trying different ways to getting them to line up, I told them to just bolt it up to the stock position, and I'll order some 3.5 tips to weld on so everything can be even.

I am very happy with the sound as I get that V6 sound I used to get out of my e90. The only thing I am wondering about is, I am hearing a blow off valve type sound when revving, but from what Ive read, our cars dont have a blow off valve, so is this sound normal or could there be something wrong with the weld?

My passenger side (US) tip actually stuck out about an inch more after install. I just adjusted the tip to make them even.

The muffler will have nothing to do with the noise of the diverter (blow off) valve makes. You can definitely here it regardless, its just not very loud.

[TurboM]

Originally Posted by Stefanovich

Hi
Just recently fitted a 335 MPE to my 328i.
Surprised at how little extra sound the exhaust contributes to the overall mix.
Very subtle, just enough for me.
Anyway, purchased a BMW 75mm exhaust clamp, cut and fitted to the standard muffler setup, then fronted up to my local muffler shop where they fitted the 335 MPE by adapting (cut & weld) a 'stretched' piece of 72mm stainless tube to span between the existing clamp and new muffler.
Had to fit the 335 rear diffuser at the shop. 1.5 hrs in all.
Great outcome. And easy to revert to standard in needed.
Cheers
Steve

Sounds pretty much the same as my install. Not very complicated, just need to muffler shop (or welder) to fit it correctly.

[altaaf999]

Originally Posted by Stefanovich

Hi
Just recently fitted a 335 MPE to my 328i.
Surprised at how little extra sound the exhaust contributes to the overall mix.
Very subtle, just enough for me.
Anyway, purchased a BMW 75mm exhaust clamp, cut and fitted to the standard muffler setup, then fronted up to my local muffler shop where they fitted the 335 MPE by adapting (cut & weld) a 'stretched' piece of 72mm stainless tube to span between the existing clamp and new muffler.
Had to fit the 335 rear diffuser at the shop. 1.5 hrs in all.
Great outcome. And easy to revert to standard in needed.
Cheers
Steve

"surprised at how little extra sound the exhaust contributes to the overall mix" ????

you saying there isn't much of a difference? and it isn't worth it?

also please elaborate the clamp you used is a 328 clamp?

[TurboM]

Originally Posted by altaaf999

"surprised at how little extra sound the exhaust contributes to the overall mix" ????

you saying there isn't much of a difference? and it isn't worth it?

also please elaborate the clamp you used is a 328 clamp?

BMW Part Number - 18307560781

[altaaf999]

Originally Posted by TurboM

BMW Part Number - 18307560781

please advise whether there currently is a clamp on my OEM 428 exhaust from the factory? and if this is usable...

[TurboM]

Originally Posted by altaaf999

please advise whether there currently is a clamp on my OEM 428 exhaust from the factory? and if this is usable...

No, the exhaust is one piece from the factory (after the downpipe)

[altaaf999]

Originally Posted by TurboM

No, the exhaust is one piece from the factory (after the downpipe)

thanks.. also please advise regarding electronic valve? is it difficult to disconnect? any other installation hassles to be aware of?

[altaaf999]

also are the connections the same for EV on 328 and 335

[exclusivo]

Originally Posted by TurboM

My passenger side (US) tip actually stuck out about an inch more after install. I just adjusted the tip to make them even.

The muffler will have nothing to do with the noise of the diverter (blow off) valve makes. You can definitely here it regardless, its just not very loud.

I thought the purpose of the diverter was to retintriduce that air back into the engine, and there would be no blow off?

On another note, my gas mileage has been terrible because I've been purposely building boost lol...The sound is music to my ears.

[TurboM]

Originally Posted by altaaf999

also are the connections the same for EV on 328 and 335

yes

[TurboM]

Originally Posted by exclusivo

I thought the purpose of the diverter was to retintriduce that air back into the engine, and there would be no blow off?

On another note, my gas mileage has been terrible because I've been purposely building boost lol...The sound is music to my ears.

Correct, however you can still hear the recirculation of the air through the plumbing of the intake (not nearly as loud as an open atmosphere type)

[altaaf999]

Originally Posted by TurboM

yes

hey guys please advise on the process to disconnect the Electronic Valve? do you simply just pull out the 3 wires? I had a look at the EV but haven't attempted yet.. please advise urgently

[TurboM]

Originally Posted by altaaf999

hey guys please advise on the process to disconnect the Electronic Valve? do you simply just pull out the 3 wires? I had a look at the EV but haven't attempted yet.. please advise urgently

Just unplug it

[altaaf999]

hi guys... finally got the job done on my 428i ! loving it!! will post pics soon.... the only difference now that I don't like between a 435i and the 428i with 435i MPE is that if you really had a 435i the second exhaust opens up momentarily after starting the car and I have seen this on the F30 335i as well.. but on the 428i the second exhaust even after conversion is mostly closed... is there a way to leave the valve continuously open? as it sounds much better with both exhausts open... best regards

[BeachsideF30]

Originally Posted by altaaf999

hi guys... finally got the job done on my 428i ! loving it!! will post pics soon.... the only difference now that I don't like between a 435i and the 428i with 435i MPE is that if you really had a 435i the second exhaust opens up momentarily after starting the car and I have seen this on the F30 335i as well.. but on the 428i the second exhaust even after conversion is mostly closed... is there a way to leave the valve continuously open? as it sounds much better with both exhausts open... best regards

Can't you just unplug it? So you installed the n55 MPE instead of the standard rear section. We definitely need some videos

[TurboM]

Originally Posted by altaaf999

hi guys... finally got the job done on my 428i ! loving it!! will post pics soon.... the only difference now that I don't like between a 435i and the 428i with 435i MPE is that if you really had a 435i the second exhaust opens up momentarily after starting the car and I have seen this on the F30 335i as well.. but on the 428i the second exhaust even after conversion is mostly closed... is there a way to leave the valve continuously open? as it sounds much better with both exhausts open... best regards

Just unplug it

[Julesjohn]

I had something slightly different done to my 2013 328i M Sport. I installed the Magnaflow 328i #15161 cat back dual exhaust system originally but later replaced just the muffler of the 335i #15271 system in order to split the exhaust and use the 335i matte black diffuser. I like the deeper tone of the Magnaflow personally. This did require a few minor customizations from the local muffler shop and purchase of larger chrome tips. So far so good.

Vimeo video link showing cold start exhaust sound with a few revs:

[TurboM]

Originally Posted by Julesjohn

I had something slightly different done to my 2013 328i M Sport. I installed the Magnaflow 335i #15271 cat-back dual exhaust along with the 335i matte black diffuser. I like the deeper tone of the Magnaflow personally. This did require a few minor customizations from the local muffler shop and purchase of larger chrome tips. So far so good.

Looks good man