Gava

iTrader: (10)

I was wondering on how much i would be looking roughly on going for a twisted setup on my02 sti? what sort of power gains do you get from this and is it wise to do on a standard sti engine or does it need to be rebuilt to a 2.1 or 2.3?

any help would be great

cheers

stevep360

iTrader: (20)

grand for pipework, 1200 for turbo and 250 for ext wastegate, need 2.1 or 2.35 to see gains and prob syvecs ecu. of course with supporting mods such as fmic, injectors etc etc

scooby2.5maz

iTrader: (16)

Or a 2.5 !!

Gava

iTrader: (10)

aint the 2.5 engine weak on head gaskets?

MattyB1983

iTrader: (51)

I believe the only benefit from going twisted is being able to run larger turbos. You can achieve very late 400's with standered position turbo so unless you want to go beyond this I see no point.
They do look the boll0ks though....which is always a bonus. Lol.

Also worth thinking about is if you do want to go to that sort of power your OE STI engine will need some major surgery.

MattyB1983

iTrader: (51)

They seem to suffer from HG issues when the boost is raised. In standered trim I believe they are fine.

Gava

iTrader: (10)

well i have had my scooby for the past 3 years or so now and being a bugeye sti its aint worth nothing these days, so thought i might aswell keep hold of it and do something mad to it over the next few years, thats why i was looking down this route

stevebt

iTrader: (8)

I would not go rotated as the spend is not worth it when some standard bolt on turbo's can do 500/550bhp with a splash of meths Also going rotated will need custom pipe work for the intercooler and a different filter and trumpet. Its definately alot more expensive than a bolt on turbo.

Gava

iTrader: (10)

so the best route to go down is a 2.1 build with a big turbo then?

jura11

iTrader: (7)

Not really we are making on 2.1 with MDX321T 490bhp with 20% methanol,still think on MDX321T is possible make 500bhp,but our heads are just OEM JDM WRX with AVCS,with better heads i think is possible above 500bhp on T




Jura

Gava

iTrader: (10)

i dont wanna do the meth mix really i dont know nothing about it, so if i do a full stroker kit rebuild will i need different heads?

jura11

iTrader: (7)

If you don't want mixing methanol i would suggest MDX321V which will spool slightly worse than T,but will make 500bhp without the meth

About the your heads,you don't need different heads,this case has been mine,but if you want go different route,i would suggest port and polishing heads will help make more power,but in some cases you will sacrifice the spool up of turbo



Jura

Gava

iTrader: (10)

so my standard sti heads are ok then? do i need different cams at all? and is that turbo better than a scooby clinic billet range?

jura11

iTrader: (7)

Yes your heads are OK,but as i said before you will need porting and polishing your existing heads for better flow,but at 500bhp i wouldn't go with this.
Contact few engine builders what they will suggest,but we are at 490bhp with OE JDM WRX cams

About the cams,don't think you are need better cams,people going for better cams when going above 600bhp,but some people still sticking with the OE STi cams

About the SC turbo,not sure if they're still have SC50,which is 500bhp turbo,but from dyno runs what i've seen is laggy like on 2.0L or 2.1L,this turbo is mainly best suited 2.35L or 2.5L


Jura

Gava

iTrader: (10)

where can i buy a mdx321v turbo from?

jura11

iTrader: (7)

MDX321V is MD321 Billet

Lateral Performance

http://lateralperformance.co.uk/prod...500bhp__billet


Jura

Gava

iTrader: (10)

cheers mate thank you very much

stevebt

iTrader: (8)

The standard sti engine should take 450bhp so why not just add an MD321t+, upgrade injectors and fuel pump and get the car mapped. It will save you a fortune and it may just be what your looking for

Gava

iTrader: (10)

the car has got a uprated fuel pump, headers, 3" decat system and front mount and made 355bhp, but like i said as i keeping it i might as well do a rebuild and go for big power

360ste

iTrader: (1)

I'm running my bug STi at 440 bhp on standard internals running a FP green turbo, FMIC 3.5 inch decat APS system, uprated fuel pump and a GEMS ECU.
I am looking at going the 2.1 build with a rotated setup which I have discussed with Scoobyclinicwhich will be good for 500 bhp+ that will be running standard cams and heads.

Pramas

iam in similar situation, forged engine just gone in, so after running in iam weighing options, i was under the impression rotated runs similar power as standard up to a certain lvl at lower boost due to better flow.
Might cost more to start with but surely worth it if you were thinking about 500+

jura11

iTrader: (7)

Steve T+ is no longer for sale on Lateral website(yes you can buy used one) and new billet T will be better choice,we are running and is amazing turbo.But still i'm recommending billet V which will make 500bhp on V-power alone and still will spool great on 2.0L or 2.1L




Jura

eggy790

iTrader: (20)

one main thing not mentioned here, is how aggressive a rotated position turbo is as oppose to standard location.. rotated for the ultimate experience!

360ste

iTrader: (1)

When kept on boost my standard fit has a good kick. Snag is I am now wondering about going the full hog with a 2.5 build still going with a rotated setup. I am sure what ever build I go for it will be rotated, hopefully chat to Scoobyclinic on saturday.

Anger

iTrader: (4)

+1

MartynJ

It's all about budget really and nothing more.
If you can afford to go the whole hog, go rotated with either a Billet 30R or a non Billet 35R and choose either with a .63 housing. Fit the kit to a 2.1 stroked engine like below and it'll drive very well indeed.



For reference it made 530bhp and 520lbft on Vpower only at the same 2 bar boost.

Pramas

any maps available for a fully built 2.5 pinned block? interested in a gt30r v a gt35r