exhaust size

[Bart]

hey lads,

just got my hands on some extractors and looking at doing the whole exhaust system. just need some advice as to sizing and resonators etc. its got a 16v 4age and was thinking a 2 1/4 inch but have been told to go 2 1/2 inch. not real sure which way to go. will be getting some sort of high flow cat but dunno bout resonators/mufflers. any help will be muchly appreciated.

cheers bart

[Gunner]

2,1/4 is big enough, I usually run, 2.5 from extractmores, to the cat, 2,1/4 to the resonator and 2.5 after the rest of the way.

[DavisJD]

2 1/4 will be fine.

[Bart]

cool thanks. Any tips on a resonator or hotdog etc?

[dr1ft-pig]

do you want it loud or just to sound good without disturbing the peace???

id say 2.25 straight pipe with 1 resonator or 2 if you like then your choice of straight pipe or muffler on the rear

[choom78]

Follow your extractor pipe size. If its currently its 2.25, then you can keep it all the way unless u really want to go 2.5 from there which isnt too much of a problem. Just don't put a 2.25 on a 2.5 outlet extractor.

If you doing press bends and going over diff, then 2.5 is the safer bet. Look at ur whole system before deciding it all.