tommyep82 Posted July 30, 2015 Share Posted July 30, 2015 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, Quote Link to post Share on other sites
Gainzy Posted July 30, 2015 Share Posted July 30, 2015 Go buddy club spec 2 straight through no hassle Quote Link to post Share on other sites
Sefton-EP91 Posted July 30, 2015 Share Posted July 30, 2015 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! Quote Link to post Share on other sites
AdamB Posted July 30, 2015 Share Posted July 30, 2015 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. Quote Link to post Share on other sites
daniel_g Posted July 30, 2015 Share Posted July 30, 2015 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. Quote Link to post Share on other sites
wickedep Posted July 31, 2015 Share Posted July 31, 2015 full 2.5" exhaust will easily be enough. Quote Link to post Share on other sites
tommyep82 Posted July 31, 2015 Author Share Posted July 31, 2015 Thanks lads and dose mid box effect flow at all or just for noise, I was going to get mine removed Quote Link to post Share on other sites
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