hi has anybody fitted a twisted billet gt30 onto a hatch sti or know anybody that has? just wondering what performance etc could be expected really cheers

 

Same as any 2.5 if sorted. We've seen 490 from an SC46 with a meth mix.

 

Who's doing your engine build?

Tony

 

Api and at present its being built with a sc46. But i was more thinking of future really perhaps getting 2.5 block pinned then going twisted turbo etc just wonderd if anyone had done it really.

 

whats the best youve had without meth mix?

 

455 bhp on V Power from an SC46.

 

Alan if i was looking for a bit more than 455 without meth would it be an idea to use a sc50 ? would it still be ok on the 2.5 block as alot of people have said its a bad idea to go over 500bhp as they start to fail pretty quick?

 

I have the hatch with the sc46 billet in it built by enginetuner.
On vpower its just about perfect for road use as my daily driver. With the methanol it starts getting a bit extreme for the road hitting over 500flbs before 3500rpm.
When we first spec'd my car I requested around 450bhp. The sc billet range was new and relatively unknown at the time so an sc50 billet was put in my car first. If i remember rightly it made 420bhp at only 1.1bar. It didnt get tested any higher than that as there was an unknown issue at the time. But realising the sc50 would comfortably make over my requests, we opted to go for more spool with the sc46. Im fairly sure you would be seeing near 500bhp on the sc50. But if I wanted to go any higher than what I have now I would go rotated. I wouldn't want to sacrifice anything that I get low down at the moment for a few extra horses. Also I don't think the sc50 is so "standard fit" in the hatch. It pretty damn tight in there!

Will the engine last? Everyone seems to have an opinion about how much the 2.5 can take. I think it depends on who builds it, how your gonna use it and who maps it.

Good luck with your project, can't wait to see some results

 

thanks jay, do you have seperate maps for running with the meth? i am getting ecutek racerom which i belive can have 2 maps so could have one with meth and one without if its needed?

 

Yes I have racerom with dual maps, may aswell get a methanol map or race fuel map done. You might never use the map but its good to know its there and what your car is fully capable of with the right juice