BMW PE vs 135i vs 135i+Res Delete Exhaust

[kaputt]

Thanks for this ^

I am probably going to pull the trigger on the 135i exhaust.

[Esteban]

Originally Posted by awhc

Here is my 130i with 135i PE and Resonator delete. I don't feel there is any drone, just a sporty exhaust, quiet when idling and under 3k rpm, sounds amazing up the top. Get some pops and cracks.

I did a DIY resonator delete. I cut open the resonator and wrapped the perforated holes with header tape wrap and secured it with hose clamps.

Sounds pretty good!

Like the tunnel vids best! (of course) lol

[kaputt]

To add on with a question. Is the 135i Performance Exhaust essentially the same as the 128i one? I know some minor mods may be required to make it fit, but are there any major drawbacks design wise because it was technically created for a 135i?

[asbrr]

Originally Posted by kaputt

To add on with a question. Is the 135i Performance Exhaust essentially the same as the 128i one? I know some minor mods may be required to make it fit, but are there any major drawbacks design wise because it was technically created for a 135i?

It's not the same, but all the hanging points etc should be the same. I don't know off hand if it's just a muffler or comes with more piping, if it's just a muffler like the 128i PE, a good exhaust shop should be able to fit it with no issues to your 128i. There may be a small pipe diameter difference, but as I said, a good exhaust shop will make it work.

[Esteban]

Originally Posted by kaputt

To add on with a question. Is the 135i Performance Exhaust essentially the same as the 128i one? I know some minor mods may be required to make it fit, but are there any major drawbacks design wise because it was technically created for a 135i?

The first pic is the Performance exhaust for the 128i. The second pic is the Performance exhaust for the 135i, so you can see the difference. The Performance exhaust for the 128i is NLA, as you probably already know.

[kaputt]

Oh interesting, thanks for posting that. Looks like a lot more work involved than I originally imagined.

Are there any aftermarket options that are similar to the PE for the 128i? The one thing I really want to avoid is any drone.

[Thunderguts]

I'm bringing this thread back because I'm planning to try this if I cannot locate a 128i performance exhaust anywhere. It would not be hard to make the 135i PE fit on the 128i. The inner diameter of the 135i exhaust seems to be about 67mm and the sleeve that comes in the 128i PE kit is 65mm. That means the 135i pipe should fit over the stock 128i pipe fairly snugly if you cut it.

The bends and hanger mount on the 135i PE seem to be in exactly the same place as 128i. That gives you two options. You can leave the 135i PE exhaust alone and use a thicker gasket at the mid-pipe and connect them that way. You could also cut the 135i PE inlet exactly how the 128i PE pipe comes from the factory and have a muffler shop weld them.

The only question is, how will it sound? Is the 135i PE inherently louder to make up for the turbos? I don't know anyway to answer this without trying it.

[Esteban]

Originally Posted by Thunderguts

I'm bringing this thread back because I'm planning to try this if I cannot locate a 128i performance exhaust anywhere. It would not be hard to make the 135i PE fit on the 128i. The inner diameter of the 135i exhaust seems to be about 67mm and the sleeve that comes in the 128i PE kit is 65mm. That means the 135i pipe should fit over the stock 128i pipe fairly snugly if you cut it.

The bends and hanger mount on the 135i PE seem to be in exactly the same place as 128i. That gives you two options. You can leave the 135i PE exhaust alone and use a thicker gasket at the mid-pipe and connect them that way. You could also cut the 135i PE inlet exactly how the 128i PE pipe comes from the factory and have a muffler shop weld them.

The only question is, how will it sound? Is the 135i PE inherently louder to make up for the turbos? I don't know anyway to answer this without trying it.

This member installed the 135i PE on his 128i. Maybe you could PM him and ask how he installed it and what he thinks of the sound. According to his post here, he seems to like it.

https://www.1addicts.com/forums/showpost.php?p=24174318

He couldn't find the PE for the 128i either so he bought the 135i PE instead. Check his earlier posts to read about it.

[asbrr]

Originally Posted by Thunderguts

I'm bringing this thread back because I'm planning to try this if I cannot locate a 128i performance exhaust anywhere. It would not be hard to make the 135i PE fit on the 128i. The inner diameter of the 135i exhaust seems to be about 67mm and the sleeve that comes in the 128i PE kit is 65mm. That means the 135i pipe should fit over the stock 128i pipe fairly snugly if you cut it.

The bends and hanger mount on the 135i PE seem to be in exactly the same place as 128i. That gives you two options. You can leave the 135i PE exhaust alone and use a thicker gasket at the mid-pipe and connect them that way. You could also cut the 135i PE inlet exactly how the 128i PE pipe comes from the factory and have a muffler shop weld them.

The only question is, how will it sound? Is the 135i PE inherently louder to make up for the turbos? I don't know anyway to answer this without trying it.

I have a regular 135i muffler on my 128i. The exhaust shop I took it to actually welded the pipe right to the end of the factory resonator. All hangar points etc are the same, is a perfect fit. So a performance exhaust for the 135i should go on no problems, as the previous poster has shown with the link.

[markslc1]

Originally Posted by asbrr

I have a regular 135i muffler on my 128i. The exhaust shop I took it to actually welded the pipe right to the end of the factory resonator. All hangar points etc are the same, is a perfect fit. So a performance exhaust for the 135i should go on no problems, as the previous poster has shown with the link.

I've been planning on adding AA headers to the 128, and understand they don't sound good with the PE. (too loud). So I was thinking AA headers with the 135 axle-back would be a good choice. Anyone out there have any feedback regarding the sound between this setup and the standard PE+stock manifold? As mentioned, the stock PE sound is perfect. But I need some more HP without being too noisy.

[asbrr]

Originally Posted by markslc1

I've been planning on adding AA headers to the 128, and understand they don't sound good with the PE. (too loud). So I was thinking AA headers with the 135 axle-back would be a good choice. Anyone out there have any feedback regarding the sound between this setup and the standard PE+stock manifold? As mentioned, the stock PE sound is perfect. But I need some more HP without being too noisy.

From memory, the PE + stock everything is actually a bit "louder" than headers+135 muffler. The headers add a bit of volume, edge, and "snarl" to the 135 muffler option.

Look for a post from Suhb , he had this combo and posted a video (it was me asking for a video). He also had the headers + PE combo and might have posted a video of that too...