[verbs]

Saw some pictures on 3 series cars with M-performance exhaust and stock diffuser where the tips stuck out more than normal. Is the M-performance diffuser needed to fix this?

[pikcachu]

No. You just need to install it correctly.... you need to cut the stock pipe and measure so it aligns properly

http://www.2addicts.com/forums/showt...hlight=Install
http://www.2addicts.com/forums/showt...hlight=exhaust

[verbs]

Originally Posted by pikcachu

No. You just need to install it correctly.... you need to cut the stock pipe and measure so it aligns properly

http://www.2addicts.com/forums/showt...hlight=Install
http://www.2addicts.com/forums/showt...hlight=exhaust

I was going to have it port installed with my new car order. Will they do all that?

[pikcachu]

I suppose they should install it correctly....

[DanG]

There are two part numbers for the M Performance exhaust. One with the M Performance rear diffuser and one with out. If you order the right one, the exhaust tips will be in the normal positions and length.

[Luminous]

when i got my performance exhaust installed, the tips were definitely sticking out further than i liked. the dealership said it was installed correctly and that they would have to cut the pipe again to move the tips further in. i ended up adding the rear diffuser which completely solved the problem. i do recommend the performance diffuser either way, i feel it really completes the rear end.

[quenotte]

Originally Posted by Luminous

when i got my performance exhaust installed, the tips were definitely sticking out further than i liked. the dealership said it was installed correctly and that they would have to cut the pipe again to move the tips further in. i ended up adding the rear diffuser which completely solved the problem. i do recommend the performance diffuser either way, i feel it really completes the rear end.

Do you have the BMW part number of your MPE?

It is stamped on the exhaust..

Can you take a photo of it?

[Luminous]

Originally Posted by quenotte

Do you have the BMW part number of your MPE?

It is stamped on the exhaust..

Can you take a photo of it?

sorry but i do not. when i get a chance to take a peek under the car i will snap a photo for you.

[quenotte]

Thanks in advance for the photo shoot!

I also have a MPE exhaust without MP Diffuser and to my mind exhaust tips are sticking further out.

Reference of my MPE (without MP Diffuser) is 18 30 2 293 766

Reference of MPE for MP Diffuser is 18 30 2 286 673

[MrBucket]

Originally Posted by quenotte

Do you have the BMW part number of your MPE?

It is stamped on the exhaust..

Can you take a photo of it?

This is the non M Performance diffuser exhaust I installed in my car myself, it fits perfectly with the stock tips even.

[verbs]

Originally Posted by quenotte

Thanks in advance for the photo shoot!

I also have a MPE exhaust without MP Diffuser and to my mind exhaust tips are sticking further out.

Reference of my MPE (without MP Diffuser) is 18 30 2 293 766

Reference of MPE for MP Diffuser is 18 30 2 286 673

Thanks for the feedback. For that reason I'm going to pass on the exhaust.

[verbs]

Originally Posted by MrBucket

This is the non M Performance diffuser exhaust I installed in my car myself, it fits perfectly with the stock tips even.

No cutting, nothing special? Now I'm confused.

[pikcachu]

You need to cut the stock main pipe..... depending where you do it it will determine how much the whole exhaust will stick out, although you have some adjustment at where the MPE clamps to the stock main pipe

http://www.2addicts.com/forums/showp...73&postcount=1

[MrBucket]

Yep that photo with the tape is my stock exhaust before I took a sawzall to it. I just measured the length of the pipe sticking out of the M Performance one and gave myself a few mm of leeway and cut along the tape edge.

[MrBucket]

Originally Posted by verbs

No cutting, nothing special? Now I'm confused.

I have a lift at home, but the only tools I used were the right size socket wrench for the clamp and hangers, a sawzall, and a rubber mallet to remove the stock tips from the stock exhaust. There really isn't much to the install other than cutting it in the right spot and there is plenty of access under there. You could do it on ramps or jack stands easily.

[verbs]

Originally Posted by MrBucket

I have a lift at home, but the only tools I used were the right size socket wrench for the clamp and hangers, a sawzall, and a rubber mallet to remove the stock tips from the stock exhaust. There really isn't much to the install other than cutting it in the right spot and there is plenty of access under there. You could do it on ramps or jack stands easily.

I really don't want to have to go that route if I can avoid it.....that's why I was hoping port installed would get it done right from them get go with no sticking out without me having to buy a separate diffuser.

[1ChrisRuck]

When ordering the M Performance Exhaust, BMW makes a point to inquire and clarify with the buyer WITH or WITHOUT the M Performace Diffuser? Why do they ask this? I assume there's a reason.

Am I wrong in assuming the reason they ask this is because they have taken the exhaust pipe length difference into consideration and perhaps have addressed this issue in design?

[MrBucket]

Originally Posted by 1ChrisRuck

When ordering the M Performance Exhaust, BMW makes a point to inquire and clarify with the buyer WITH or WITHOUT the M Performace Diffuser? Why do they ask this? I assume there's a reason.

Am I wrong in assuming the reason they ask this is because they have taken the exhaust pipe length difference into consideration and perhaps have addressed this issue in design?

The difference is that the two pipes coming out of the muffler for the M Performance diffuser are longer so they line up properly since the diffuser sticks out further. You can get the non diffuser exhaust and get some extenders for $100 (iirc that is the price) if you ever wanted to get the diffuser down the line.

[MrBucket]

Originally Posted by verbs

I really don't want to have to go that route if I can avoid it.....that's why I was hoping port installed would get it done right from them get go with no sticking out without me having to buy a separate diffuser.

You dont need to buy anything other than the exhaust if thats all you want. I paid $650 for the non M Performance diffuser and it came with the exhaust clamp needed. You can clearly see I reused the stock tips even.

[horsepower_and_hounds]

I did the same and used the stock tips.....but I got the M diffuser. You cannot get the exhaust for that cheap anymore....the cheapest it could be had 2 months ago was $740 sipped

[MrBucket]

Originally Posted by ehagerty

I did the same and used the stock tips.....but I got the M diffuser. You cannot get the exhaust for that cheap anymore....the cheapest it could be had 2 months ago was $740 sipped

The cost wasnt the important part there, but that there are 2 different exhausts and that the non diffuser one can be used later on with the diffuser if you get the adapters.

[horsepower_and_hounds]

Originally Posted by MrBucket

The cost wasnt the important part there, but that there are 2 different exhausts and that the non diffuser one can be used later on with the diffuser if you get the adapters.

That is correct