exhaust

[garageboy]

does any1 no if u fit a 4inch exhaust 2 a 1.2 nova wil it lose back pressure + how wil it sound

[2litreturbo]

dont know how it will sounds. Every make of exhaust sounds different and then the sound also depends on the engine. You will loose back pressure as aftermarket exhaust are free flow.

All it basically means is the speed the gas flows out of the cylinders will increase which means increased bhp but a lower torque.