Dzionassi

Since I have QX50 there is no aftermarket exhaust available.
Already have Berks installed and looking to free up more ponies.
Soooo looking for some feedback, g37 and qx50 shares same y pipe. Is there any hp/tq gain with stock catback and aftermarket y pipe?
My concern is that most aftermarket y pipes outlet is 3 inches and stock is much smaller...

takeapieandrun

iTrader: (2)

You probably won't gain much power at all with just a Y pipe, maybe a handful of hp. It's more beneficial when you get test pipes or HFC, and need to keep your whole exhaust freer flowing.

MaQG37

iTrader: (4)

You will not see a discernible different with just adding the Y-Pipe. Keep it stock