Wastegate Outlet Muffler
#46
Drifting
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Right still not bashing but, regarding exhaust dia after the gas has exited the turbo and travelled a certain distance through a 3 inch downpipe it seems that increasing the dia of pipe as the gas is cooling and less dense has little advantage other than looks, maybe if you fit the exhaust back to front it will work better
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
#48
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Thanks for the response Mike! I might have to give it a try, I like loud exhaust anyways
#49
Basic Sponsor
Rennlist
Site Sponsor
Rennlist
Site Sponsor
Thread Starter
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Right still not bashing but, regarding exhaust dia after the gas has exited the turbo and travelled a certain distance through a 3 inch downpipe it seems that increasing the dia of pipe as the gas is cooling and less dense has little advantage other than looks, maybe if you fit the exhaust back to front it will work better ![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
We increase the diameter of the pipe because we don't want a pipe. Since we have to put a pipe there (needs to exit out the back of the car and we have to get there somehow), the next best thing to no pipe is a big pipe. The bigger the pipe, the more it simulates no pipe. I know that sounds very technical.
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
If your suggesting getting smaller as you go, go ahead and give it a try.
![popcorn](https://rennlist.com/forums/images/smilies/popcorn.gif)
__________________
Mike or Dave Lindsey
www.lindseyracing.com
U.S. 1-877-943-3565
Other 1-405-947-0137
Mike or Dave Lindsey
www.lindseyracing.com
U.S. 1-877-943-3565
Other 1-405-947-0137
#50
Drifting
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
![Big Grin](https://rennlist.com/forums/images/smilies/biggrin.gif)
#51
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Right still not bashing but, regarding exhaust dia after the gas has exited the turbo and travelled a certain distance through a 3 inch downpipe it seems that increasing the dia of pipe as the gas is cooling and less dense has little advantage other than looks, maybe if you fit the exhaust back to front it will work better ![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
The part that you might not be aware of is that not only is pipe diameter of importance, but also the length of the pipe has an effect.
A 3" diameter pipe 15 feet long will induce greater back pressure than a 5 ft pipe of the same diameter.
So in order to simulate as short a pipe as possible, at least make it bigger as it gets longer.
#52
Drifting
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
The part that you might not be aware of is that not only is pipe diameter of importance, but also the length of the pipe has an effect.
A 3" diameter pipe 15 feet long will induce greater back pressure than a 5 ft pipe of the same diameter.
So in order to simulate as short a pipe as possible, at least make it bigger as it gets longer.
A 3" diameter pipe 15 feet long will induce greater back pressure than a 5 ft pipe of the same diameter.
So in order to simulate as short a pipe as possible, at least make it bigger as it gets longer.
#53
Addict
Rennlist Lifetime Member
Rennlist Lifetime Member
#55
Addict
Rennlist Lifetime Member
Rennlist Lifetime Member
#56
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I want to hear it!! Tell me when...I'll buy beer!
I really do need to get the car up to my brother's place and out of the garage...
#58
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I'll be posting my Lindsey Racing 5 inch with dump to atmosphere when the weather gets better both without the LR muffler and with but it won't happen untill the dam snow goes away ![Frown](https://rennlist.com/forums/images/smilies/frown.gif)
Jason
![Frown](https://rennlist.com/forums/images/smilies/frown.gif)
Jason
#59
Rocket Scientist
Rennlist Member
Rennlist Member