scoobyd00999

iTrader: (1)

I have a 3" exhaust system from the cat back to tailpipe and I am thinking of changing it to a 2.5 system(I need a quieter system as the neighbours arent happy at 6:00 am)
What i need to know is ,i take the exit at the cat is 2.5,so is it just a case of replacing the centre section and back box or could i just replace the back box.
My theory is there seems to be more secondhand 2.5 systems than 3"

CrispyK

iTrader: (3)

Have you tried a bung?

scoobyd00999

iTrader: (1)

yeah been done there but found that after a month or so it would slowly work its way loose and then sound crap

Stylsvig

if you make your tail smaller it will sound less.. I have done that on my old 405 Mi16..

scoobyd00999

iTrader: (1)

any more views

midnight

iTrader: (10)

Providing your downpipe is 2.5 inches you should be able to change centre and back box together , as the blitz nur spec r is 3 inches and mates to a STD cat downpipe . If you want to just add a backbox to your current system you will either have to sleeve it or get a reducer fitted to take it from 3'to 2.5'

scoobyd00999

iTrader: (1)

ok any idea where i can get a reducer or would it come built into the back box

jura11

iTrader: (7)

Hi matey Nur Spec are noisiest exhaust,i have full 2.5" and still is loud,you can try centre pipe with resonator,which will bring noise little bit down