On a Cav Turbo. If i rip the guts out the cat and remove centre box to replace with straight pipe.
Its a std LET exhaust but with a scorpion back box.
Dont wanna spend out on an uprated exhaust for the cav when its only gotta do a year before it goes in the astra, reckoned this would give a good improvement in flow though.
But how louds it gonna be, dont like OTT with exhausts. Leave that to the laxpower lads.