M4 Stock Exhaust => M Performance / How Inside Change ?

[swagon]

Originally Posted by exo-shell

I got a ZCP exhaust installed on my non-ZCP F80. I have a BM3 tune that I flashed to stock to take in for service. The ZCP exhaust does indeed sound different.

Note. I'm not saying the exhaust makes the ZCP car sound the way it does. I just notice a difference in my own personal experience.

How do you like the sound with the ZCP muffler?

[x.shell]

Originally Posted by swagon

How do you like the sound with the ZCP muffler?

I would prefer the sound of the M-Performance or Remus+AA, but not enough to put that kind of money down. ZCP+BM3 is fine for me.

[swagon]

Originally Posted by exo-shell

I would prefer the sound of the M-Performance or Remus+AA, but not enough to put that kind of money down. ZCP+BM3 is fine for me.

Ye, wouldn't mind MPE either, lol. But it's not much louder than civic, is it? ZCP mufflers can be found pretty cheap on the used market, which makes it quite interesting to me.

[whoop_ass]

Originally Posted by AVCI1

Is there audio video ?

I will make a video of it when entire system is done

lets hope we didnt make it worse!!
LOL

[AVCI1]

Originally Posted by whoop_ass

I will make a video of it when entire system is done

lets hope we didnt make it worse!!
LOL

[ampelio]

Originally Posted by whoop_ass

Some progress so far and some welding porn

no idea what it will sound like but we will pack it tight to keep tone down with the valves closed.

Thanks for the update with picture. Subscribed!

[whoop_ass]

A Little update

resonators all welded up and silencer packing gone back in and welded shut
while it out we also going to give it a coat of Hi temp Heat black, at least it will blend in better with the diffuser :-)

will update again once exhaust is back on the car with the custom midpipe.

[AVCI1]

Originally Posted by whoop_ass

A Little update

resonators all welded up and silencer packing gone back in and welded shut
while it out we also going to give it a coat of Hi temp Heat black, at least it will blend in better with the diffuser :-)

will update again once exhaust is back on the car with the custom midpipe.

We're waiting for the sound. Make video before and after.

[ChizanF82]

Sound????

[drgmt]

Originally Posted by CanAutM3

Are you familiar with what Helmholtz resonance is?

The best comparison is blowing over a bottle, when it is filled with deifferent levels of water, the tone changes. It is similar with the exhaust system, despite that the exhaust gases bypass (most of) the rear section on the standard exhaust and MPE, the shape and characteristics of the exhaust can will affect the tone.

Further, it has been confirmed and documented with pictures in a thread on this forum a while back that the CP Sport exhaust indeed has additional perforations relative to the base exhaust. What other difference there is between the base and CP Sport exhaust is not yet known.

Here are the additional baffles on the ZCP exhaust over stock.

[Lifestyler]

Originally Posted by whoop_ass

A Little update

resonators all welded up and silencer packing gone back in and welded shut
while it out we also going to give it a coat of Hi temp Heat black, at least it will blend in better with the diffuser :-)

will update again once exhaust is back on the car with the custom midpipe.

Any pics of final version ❓

[whoop_ass]

Originally Posted by Lifestyler

Any pics of final version ❓

Got it completed but actually never got around to testing

sold the car

[Banma]

For anyone still interested in this thread, Ihave an mpe with VRSF single midpipe. I have just purchased an old, cracked mpe can to cut open and perform some mad science(thanks to user mass33). If anyone is interested, I can document the process. I used to have an e92 with a 2.5 pipe mod and it sounded amazing. Kind of looking to do something similar. Wish me luck!

[Banma]

The donor is here, an ugly cadaver but thats ok. We're going to open it up, poke around inside for science, then put it all back together and try to bring it back to life. I feel a bit like Dr Frankenstein

[ntg44]

Originally Posted by Banma

The donor is here, an ugly cadaver but thats ok. We're going to open it up, poke around inside for science, then put it all back together and try to bring it back to life. I feel a bit like Dr Frankenstein

That is the most hilariously packaged muffler I have ever seen.

[Banma]

Originally Posted by ntg44

That is the most hilariously packaged muffler I have ever seen.

It was an arts and crafts MASTERPIECE 😂

[remixaflip]

In for mad scientist shenanigans.

[ntg44]

Originally Posted by remixaflip

In for mad scientist shenanigans.

You mean to tear the block apart to replace the piston rings 'ya fried?

[MUTIGER]

Awesome thread... in for more exhaust porn

[danniexi]

Originally Posted by ntg44

You mean to tear the block apart to replace the piston rings 'ya fried?

lucky that 100 shot of NOS didn’t blow the welds on the intake.

[Lifestyler]

Originally Posted by Banma

The donor is here, an ugly cadaver but thats ok. We're going to open it up, poke around inside for science, then put it all back together and try to bring it back to life. I feel a bit like Dr Frankenstein

Please do some pics when u cut it open.

I repair a lot of cracked MPE, but never open.
Also add brakets to avoid new cracking.

But IAm 95% Sure there is no damping wool inside.

Some pics my work.









21inked on IG

[remixaflip]

Originally Posted by ntg44

You mean to tear the block apart to replace the piston rings 'ya fried?

At least the modified exhaust will turn it into a 10 second car!