Hi all,

Looking to get a new turbo for my 1996 impreza ra 2.1 stroker, with ppg gears. Been reading about the md series and the sc turbo's, but I've also been recommended the garrett gtx2871. Would like about 475bhp with good spool, anyone got any recommendations?

Cheers

 

Gt3071r

 

Sc46+

 

A GTX2871 won't make 475bhp so you can forget that one for a start.
The MDX555 500bhp unit will do it as will as an SC50, but I'd have a look at the new Precision bolt on unit.
We've tried a couple so far and been very happy with the results having seen 473bhp from a stock engined 2004 UK STi.
They're £1495 + vat inc the fitting kit so similarly priced to the alternatives.

 

Any back to backs martyn?

 

What torque with the precision on the sti

 

Cheers for the info guys, do you have a link to the precision turbo you're talking about. I've 'narrowed' it down to a rather large list of possible units so far! I'm wanting to maintain quick response from the car, track day orientated, and don't want too much lag, maybe going for around 450bhp will be a better idea?



Turbo dynamics MDX555-450

garrett GTX2871
Garrett GTX3076R


SC46 Billet - Direct Fit turbo
SC42 Billet - Direct Fit turbo


md321v 500 bhp
MD321T (450bhp) Billet
MD321H (400bhp) Billet

 

 

Hi there

Personally I would go with SC42+ or MDX321T,both turbo are proven on numerous cars and we are made on MDX321T on 20% meth 490bhp,on V-power alone 452bhp

Hope this helps and good luck

Thanks,Jura

 

Mapped another Precision today on a 2.1 strokered 2004 UK STI.




1.7 bar on vpower

 

Sorry to jump in but are there any links for the precision turbo?

 

There's a member (member being an appropriate description) on here currently building one apparantly.

 

martinj

what would you expect from a gtx2871 turbo then

 

380-430bhp would sound about right on a 71mm comp wheel and a GT28 turbine.

 

looked the owen developments site and they only list

gtx2863r - upto 430bhp and gtx2871r upto 475bhp

 

Any results for TD05 20G (billet wheel+8cm² exhaust)
or

VF48 from 2.5 STI ?

 

Is this on a stock 2.0sti martyn?
Anyone got any graphs of sc42 on a stock 2.0 sti?

 

Yes that is a completely stock engined 2 litre STI, unfortunately I've not fitted an SC42 on one. To be fair it's not a like for like comparison, it's more like an SC46 or 46 +.

 

Bump on old thread.

Martyn what bar was this produced on the stock motor?

 

1.5 bar m8.
Mapped my first 2.5 on a Precision yesterday, that made 509/490 @ 1.5 bar.

 

Cool

 

got a graph dude?

 

Anyone got a link to the precision turbo and model number please

 

http://www.ebay.co.uk/ulk/itm/400953013705

 

Thanks busta

 

And this with water/oil feed lines and gasket fitting kit £1340 delivered from U.S
http://www.ebay.co.uk/ulk/itm/121698475199

 

 

What clutch was in the car mate to handle that

 

Competition Clutch Organic stage 2.

 

FTW!