So I'm running a front mount TP38 on my 4.8 with the stock flipped manifolds with the 4 inch powerstroke down pipe i cut up then reduced into a 3 inch single pipe which runs to about midway past the transmission, this is where I'm having second thoughts, it then reduces down into a 2 1/2 inch pipe for the rest of the length of the truck and into a super 40.
I'm worried that this is going to choke off my motor and kill performance or am i over thinking this? BTW i run around 10 psi and rarely rev past 5 grand.

 

Get rid of the chokemaster... chambered muffler is horrible for turbo

 

stay with at least 3" as well...

 

thanks for the advice, so i just hacked the whole exhaust off now with a 3 inch straight pipe, my *** dyno can already feel a difference!