Originally posted by mexicanpizza
Nah...that sucker flows like a madman!
Sorry couldn't resist. Once you have a free flowing exhaust, putting the stock muffler back on causes a BIG noticable loss.
FWIW from someone who's done it.
I did have the downpipe/uppipe on for some time before I installed the Prodrive.
I honestly can say I couldn't notice any improvement when adding the Prodrive rear section to my existing HKS downpipe and ATR uppipe setup. Is it possible the center pipe is worth replacing in my setup?