Alfalover

Hi all,I have been lurking on this forum for some time before i decided to register and start a new thread.The only reason i decided to start it is because i couldnt find much information as much as i wanted.

I have an 04 Impreza Sti Jdm model which had an engine failure and at the moment it's being built as a 2.1 Stroker.Besides the 2.1 stroker the engine will still run stock jdm heads and the only mods i had done to date were the Twinscroll 3inch Milltek decat exhaust,3port boost selenoid,walbro pump,uprated actuator,pfr7b plugs and cosworth air filter.As i will be running a 2.1 stroker i am in need of a larger turbo than the vf37.I am looking to use the car for ocassionally track,a little more drag and mostly road use.My options are: to keep the stock location twinscroll setup and go with an MD321T Or V(or litchfield's equivalents),Go the rotated route and fit a GTX3076r turbo(GTX35 is out of the question as i was told that its a 'little' laggy on a 2.1 even with avcs),or go the single scroll route and fit a stock location Turbo(Can be found used and much easier/cheaper to find than a twinscroll).As far as costs the rotated setup will cost the same if not less than buying a twinscroll turbo big as an md321V(i will utilise my milltek downpipe just modify/weld the housing part).But im not worried about costs etc,im interested in having the best spool and possibly top end from such setup.Reason for this is because i've heard that there is not much of a difference(regarding spooling and top end) between a twinscroll setup and a single scroll both running stock location at 500bhp.And i dont know if its possible but i've been told that the rotated setup(with a gtx3076r 0.63 A/R) on a 2.1 stroker besides having a better top end, still spools faster than example an md321T or V(litchfield's included) in a stock twinscroll setup still on a 2.1.I dont know about this,that why i need your opinions.What do you guys think?.Thanks.

TonyBurns

iTrader: (3)

Hello

Right, I take it you didn't have your car mapped for your full decat exhaust (no mention of it in the above?), its just more cost later thats all.

Ok, bin the idea of single scroll systems, twin scroll is still the way ahead so you need to go look at Scoobyclinics website for their twin scroll turbo's, you don't need silly power, you just need a nice usable amount, the difference between 450-500 is going to be a lot of money but not a lot on the road, so take your pick from there.

Tony

Alfalover

No it was remapped running 1.5 bar boost(holding 1.2bar top end) with afr of 11:1,i was very happy with the car until it got fuel surge.You sure about that?As i'v heard that the md321's and the litchfield's are the best twin scroll/twin entry turbos right now.

TonyBurns

iTrader: (3)

Litchfields are good, but its not a true twin scroll turbo, the sc ones are, speak with Shaun on here

Tony

Alfalover

Yes i know what you're saying regarding the sc are twinscroll but i've been told that the litchfield's and the md's are still better even though they are twin entry.I have never experienced any so i cannot tell,thanks.