I've got the Borla Sport and it added about 1bhp.
My car with a 15% pulley and the Borla made 214bhp. (Flywheel)
The Borla is louder than standard but has a nice deep tone to it... Have a search on Youtube for examples.
I'm having a Janspeed Mani fitted shortly and apparently it does make it a lot louder so If you are looking at getting a new manifold at some point, the Borla Sport may not be for you... |