what is the best exhaust to boost up the hp on my wrx and which would work well with the blitz bov ?

 

GPMoto has complete exhaust for WRX. Header/up pipe, Downpipe, 3" Exhaust with variable muffler. The muffler allows you to tune noise and back pressure. Has three settings, factory to wide open. Rallitek has just recieved shipment and parts are in stock. There is a new down pipe that has no cat. It is not listed yet but parts are in stock.

[http:www.rallitek.com/specials.asp]