Exhaust Anyone out there try one of these?

[OgrePyle]

Has anyone out there tried one of these?
http://www.kingsmotorbikes.com/Motocross-Poo-Poo-Pipe-Muffler.html

I am basically wondering if this pipe is worth buying for the setup I am working on. I've had issues with the stock exhaust not clearing the motor mount or pedals, and a second exhaust not really being what I thought it was, and therefor not fitting how I wanted it to(or at all). I tried to have my old man help me weld together hodgepode out of exhaust #2 and some 3/4" EMT, and either his welding skills aren't all that, or our equipment isn't quite right for the job, cuz we burned right through it several(every) times. There was also a failed experiment with some flex tube and getting a flange attached. It turns out I'm not very good at this **** (yet).
I have a:
http://www.amazon.com/Micargi-General-1-speed-Cruiser-Firmstrong/dp/B00I525T9M

With a:
https://www.bicyclemotorworks.com/store/products-page/performance-bike-engine-kit/#.U-_snVVdVuM
https://www.bicyclemotorworks.com/store/products-page/racing-carburetor-cable-5-jets/#.U-_s11VdVuM

mounted with a:
http://www.mmbikeparts.com/ENGINE MOUNT.htm

other parts so far:
http://mmbikeparts.com/sprocket_adapter.htm w/ a 44th sprocket courtesy of bike berry
http://www.pistonbikes.com/product-p/sbs26hd.htm
http://www.bikeberry.com/greenline-heavy-duty-springer-fork.html (black)
https://www.bicyclemotorworks.com/store/products-page/perform-throttle-assembly/#.U-_valVdVuM (freebie)

There will be pictures once it's finally together and running. Thanks for any and all advice.


P.S.
This project has been EXHAUSTing...

 

[KCvale]

Has anyone out there tried one of these?
http://www.kingsmotorbikes.com/Motocross-Poo-Poo-Pipe-Muffler.html

Yep.

It's a pretty useless expansion chamber, it may have added a 1/20th of a HP if any but the real problem is the header, it has a tiny hole that just doesn't let the thing the breath.
We just cut the header off and made a new one that let it breath.

They are dandy for routing exhaust to the back and making it quieter, just don't fall for the Expansion Chamber power increase hype.

 

[OgrePyle]

What did you use to make the new header?

 

[KCvale]

What did you use to make the new header?

If memory serves we just drilled out the header on the pipe for better flow.

 

[OgrePyle]

Excellent. After all the headaches so far, that sounds really simple. Thanks a ton.

 

[KCvale]

Your welcome and if memory serves there is a mount plate on the fat part of the pipe and on both those builds I just used the tensioner bolt to secure the pipe.