[dlbrooks18]

Originally Posted by lawwailok

ok guys, after a few thought and went through all my videos i took about the exhaust. i think what im going to do next is to experiment on taking out the CF quad tips and going back to my previous single wall quad tips first. i want to see how much louder it will affect the sound.

single wall tips:

double wall tips: (start listening from 0:35 on the revving)

one thing im very sure the single wall gives a more natural "un-muffled" tone. it's more "crisp" and a bit more "echo" versus double wall is "filtering" out some of that raw original PE sound.

Is this the same car in these vids? Big difference with single wall tips..

[lawwailok]

Originally Posted by dlbrooks18

Is this the same car in these vids? Big difference with single wall tips..

yes Donny, believe it or not. both videos are the same car same setup only difference are the double wall cf tips and single wall bigger diameter tips

[blaster3500]

Was the first vid PE with catless down pipes?

[lawwailok]

Originally Posted by blaster3500

Was the first vid PE with catless down pipes?

both are with oem downpipes and 2nd kitty deleted and replaced with 2 resonators

[gunda]

Originally Posted by lawwailok

both are with oem downpipes and 2nd kitty deleted and replaced with 2 resonators

Hey will you be opening the driver side of our PE anytime soon?

[lawwailok]

Originally Posted by gunda

Hey will you be opening the driver side of our PE anytime soon?

im gonna drive around with the old single wall quad tips for a few days and see how's that sound first. just got the CF quad tips out yesterday and do notice changes upon start up already. it pops more clear, more crisp... have to drive around to listen to the volume and decide.

[StevanM5]

The only difference is that the PP-Muffler hasn´t so much perforation.
OEM each side 15cm perforation
PP about 7cm perforation.

The connectionpipes are the same cause of the flap.

[Lankster]

Has anyone else done this PE conversion? Interested to her the results

[Ripley]

Originally Posted by Lankster

Has anyone else done this PE conversion? Interested to her the results

Whitefury did it, but we are still waiting pics

[Motorsport.Nick]

I've read through this whole thread and I have to congratulate the community on a great group effort!

I've been very impressed by how long this has been unfolding and I feel lucky to have it (seemingly) concluded as I'm a fairly new member here.

[blaster3500]

I may mod my driver muffler and put a straight pipe where the resonator is. If I close the flap it should divert to the pass muffler and quiet down a lot. I have downpipes and would just like it a little louder not a ton.

[Lankster]

Originally Posted by Ripley

Whitefury did it, but we are still waiting pics

Besides Whitefury. Since I believe he is the only one so far...

[Motorsport.Nick]

Originally Posted by Wesley Crusher

My thoughts:

Passenger side - Remove the outer perforated pipe, weld in a straight pipe and remove the packing (just like the PE). Remove 50% of the packing on the inner side and leave the perforated pipe alone

Driver side - Remove the mini resonator, weld in a straight pipe and remove the packing. Remove 50% of the packing on the inner side and leave the perforated pipe alone.

That should produce a close result to the PE. It should be just as loud as the PE

I'm on board with this. Having downpipes or not is still a variable because that seems to make them a bit louder.

[Ripley]

I would make this mod next week.

Any news, guys?

[westchester335i]

I have also done it removed all the packing and covered the pipes with some exhaust wrap about a month ago.

Only issue my exhaust smokes a good amount. I thought it would go away but its there all the time but then again it has been very cold for the past month so who knows.

[Ripley]

Originally Posted by westchester335i

I have also done it removed all the packing and covered the pipes with some exhaust wrap about a month ago.

Only issue my exhaust smokes a good amount. I thought it would go away but its there all the time but then again it has been very cold for the past month so who knows.

What about the sound?

[Bleach8484]

Originally Posted by westchester335i

I have also done it removed all the packing and covered the pipes with some exhaust wrap about a month ago.

Only issue my exhaust smokes a good amount. I thought it would go away but its there all the time but then again it has been very cold for the past month so who knows.

What percentage of the perforation did you cover? did you cut open the resonator in the muffler and cover perforation in there as well?

Im interested in the sound as well. My idea would be to remove 50% packing, cut open the resonator, and cover 50% of the perforation… Its a lot of work for me not to get it right the first time!

[Ripley]

Any news about the left side of the PE?

[Jettin123]

I have modified my mufflers twice now. Currently it is passenger muffler is straight piped, passenger y pipe is covered 25%. Driver muffler resonator was opened up and straight piped, y pipe left untouched. Removed about 75% of packing from each muffler.

I have cat less downpipes and 3.5" double walled tips. Car is a 2007 e92 335i.

It sounds perfect at cold start, and gurgles nicely, but once it is warmed up it doesn't gurgle as much.

For some reason my car is misfiring, so the video isn't the greatest. :-(

[Ripley]

Did it today. Straight pipes on each side and all packing removed.

Y pipes sides untouched... so packing still there.

Sounds good (video soon)!

[kiteboy]

It is look like perfomance exhaust ...
Perfomance exhaust is little surround noise when high rpm...

[Glowin]

Originally Posted by Ripley

Did it today. Straight pipes on each side and all packing removed.

Y pipes sides untouched... so packing still there.

Sounds good (video soon)!

And no drone??? Whitefury swears that you'll get drone if you remove all the packing, which sort of makes sense I have to admit. But I guess the packing is probably most important around the pipes that remain perforated...