Exhaust size for 300bhp hybrid td04

[tommyep82]

Well lads what exhaust size are people running with these turbos, I've heard people say I would need 3 inch and other people say 2.5 is big enough to flow 300 at 1.4 bar boost, just want to see what other people are using,

I've a blitz nur spec 2.5 inch but near the downpipe it gets smaller to about 2 inche witch I'm going to change but will 2.5 be big enough,

[Gainzy]

Go buddy club spec 2 straight through no hassle

[Sefton-EP91]

I'm currently using japspeed system on a billet td04 made 300.9hp.

It's 2.5, 2.75 then 4.5inch backbox. Mine also has the drop in the downpipe!

Hope this helps mate!

[AdamB]

2.5" would do it, but would be better off with 2.75". If there's a specific JDM system you're after then go for it.

[daniel_g]

2.5" would do it id have thought.

Also hving a EWG will help a bit with flow on full chat you'll be dumping exhaust gas out the screamer.

[wickedep]

full 2.5" exhaust will easily be enough.

[tommyep82]

Thanks lads and dose mid box effect flow at all or just for noise, I was going to get mine removed