Offshore style exhaust

[Roflhat]

Was checking this out -

How do you make the exhaust like that? Or do you just add a bit like in the picture?

How does it affect performance? The same as above prop exhaust?

thanks

[Fast Fred]

on that Moda you would block off the drain in the bottom of the exhaust addapter

[Fast Fred]

then drill and drain it on the side

[Fast Fred]

makes it pull harder

[Powerabout]

I wonder how spraying a thermal barrier paint down the tube would help?

[Mumat]

I'm sure some one can fill in the science on This in more detail (than me) It changes the sound pulse a bit in the exhaust from what I know some gain a bit of hp some not so much. The other thing is you're midsection is going to run hotter. Also you're water pump can melt from the heat if it's not protected.