I have Simtec with mafless so I think a forge recirt will be better for my need I don't want a dv just because that chivvy sound

 

+1

 

iv got a sc40 on my type r standard box and engine. Iv got your normal mods plus a eclipse intake pipe and gt spec 2 headers with harvey up pipe. I hit full boost around 3750 i made 380 ,360 ft lb only as we capped it there due to wanted gear box clutch ect in 1 piece lol. I love the turbo pulls great on a 2 litre i say hope this helps a bit

 

SC 50 : We were going to fit the SC50 to H13 but as that is currently without an ECU for longer than intended and my forced absence has delayed the actual testing, that turbo is now on P93 (Sti 3 Wagon) and mapping and testing will take place very soon.
Items required to go to twin scroll were sump and pickup, oil tube and dipstick, headers and uppipe and downpipe.
I have not yet come across an uppipe in the aftermarket that is any better than the original Subaru item and I am only using RCMS tubular twin scroll headers because I could not locate OE Subaru secondhand.
I do think that heat wrapping headers and uppipe are even more important on the twin scroll.

 

Cheers Sonic thats good to know, there seems to scarse testing graphs available for the SC40. I would be very happy with your figures like you I wanted to button the power off at 380 to save gearbox etc. If/when it does go I can get more after a forged rebuild. I have been waiting for 3/4 weeks now to get a new SC40 from SC. Your spool up seems better than my current Turbo tecknicks TD05 20g which comes in at around 4k. Im hoping fitting a Harvey up pipe and the new SC40 will improve spool upte Thanks for the info mate

 

hi guys

i have read through many posts on here but i am new to all the scooby scene so please bear with me lol

i have a uk sti ppp 03/53 blob eye all on standard internals, top mount, turbo etc, only mods are the 3" turbo back de-cat exhaust, uprated panel filter it has a map on there (unsure who has done it) and is running 331bhp.

i am wanting a turbo upgrade and am looking for the 400bhp mark, i know this entails alot of £££'s but i have fallen in love with the car and as some once said "if you get an itch, you just have to scratch it!


what exactly will i be looking to buy // replace?? and is this a realistic figure without having to play with internals at this time as i just dont have the funds to do everything and to be honest i think if i can get as close to the 400 marker without internals i will be happy.

also looking for a good tuner, i am from cardiff but am willing to travel

any help would be greatly appreciated on the road to making this car MY OWN

thanks guys

craig

 

Blob STi internals seem to be good for nominally >450bhp, for fast road usage. So at c.400/400 you'd be unlucky if a rod bust, etc.


Is a 53 UK Blob STi a 2.0L single scroll?

If so, an SC40 Billet turbo and 650cc or 740cc topfeed injectors - or indeed, Lateral's OEM ph.2 440cc modified to flow 910cc - plus EcuTek remap.

You might not make 400, but should get into the 380-400 bracket with ease. But the SC40 Billet is pretty much the quickest spooling 20g-based single scroll turbo out there, so will benefit from great spool-up - which is well worth having, rather than a potential 10-20bhp loss from your 'goal'.

If money's not so tight, then I'd also add to that a Alcatek ECU/remap (in place of the OEM ECU/EcuTek), and a set of Harvey's DEI-wrapped 2-bolt GT1 Spec headers and latest design "trick" uppipe. Or indeed his latest 3-bolt GT2 Spec 'RCM-copies' headers/uppipe. But he hasn't had chance to test these ones yet.

The live-mappable Alcatek, plus the fact it's latest technology. will help the mapper eek out even more bhp/lb ft/drivability, and the headers/uppipe will eek out even more turbo response (spool-up).


BTW, if you go the Alcatek route, then you could sell your OEM ECU and get some cash back - still people out there that want them (to save them paying an EcuTek license fee).

 

--

 

I believe it is a twin scroll on there at the min, I have read a lot about the sc42&46 and both seem to be not to far apart from each other, what is the max I could squeeze from a 42 if I was to decide to further the hunger for boost! I have built a lot of engines for my previous vauxhalls and can see me quickly taking the Plunge with my new toy its certainly a lot of fun to drive ( much to the wife's dispair lol but nothing a bit of shopping won't sort when I get some spare change again )

Would I be better going for the larger 46? For the extra omphhh

 

Also offered a link g4 ecu from a 98 type r classic but unsure of what is what from one year to the next at the mo??

Any advice is greatly welcomed as this is a whole new ball game to learn again! And hopefully be able to assist others in the future!

Cheers
Craig

 

Two mates have sc 42 = over 500 hp
And second lad sc46 = over 500 hp
With meth so depends on individual car budd
Some make better figures than others

 

Hi forget the link read the following blog we wrote regarding tuning the STI 03 car, also note that the turbo on the UK sti is not a twin scroll unit.


Tuning the STI 2.0 ltr Subaru






The 01 to 06 2.0ltr STI vehicles tune easily up to 330bhp on decent fuel such as Shell “V” power. Based on our performance pack 1, exhaust, fuel pump, cold air induction kit and a re-map they will usually achieve this figure, however the next steps start to get expensive, bhp per buck becomes less and less value for money, end result, however, is stunning .


The next step towards the 400 bhp goal is a replacement turbocharger, add something like our SC42 roller bearing, direct fit billet turbo, an up rated inlet pipe and fuel regulator you will see around 375 BHP, this tops out the inter-cooler, the next upgrade would be a FMIC, this allows us to push a little harder and we see around 385bhp, as you can see the gains per mod are getting smaller as the cost spiral ever upwards.


At this point a decision is needed regarding the engine management, standard management cannot see safely over 1.55 bar of boost and to achieve our magic 420 +bhp we need to run higher boost pressures and better boost control,.
The standard management is air flow meter based and not really suitable for big power applications, we recommend a Syvecs speed density ecu, this unit does not run an air flow meter and comes with free anti lag and launch control as standard. If we now take a step backwards to the original power pack we see that an ecu re-map costs £550.00, if we add the Syvecs at this point we save money in the long run, syvecs ecu’s cost just £1695.00, fitted and mapped, less the £550.00, it actually future proofs your car ready for the big power upgrades discussed here.


With the addition of the new ecu and a set of fuel injectors your car will see around 420bhp. A long and fairly expensive road but the end result is stunning, the package has been described by another well known, award winning tuner as “insane”
You will need on top of a performance pack 1 the following…………….




SC42 Billet turbo.....................£1250.00
Labour …................................£200.00


Up rated inlet pipe…..................£225.00
Labour…..................................£150.00


Fuel regulator with fitting’s………..£225.00
Labour ….................................£70.00


FMIC……………………………….............£1050.00
Labour .................................….£300.00


Syvecs ecu, fitted and mapped…….£1695.00
Fuel injectors (flow matched)……...£360.00 fitted



Special deals on the above depending on how far you go can be discussed.

Cheers
Kev

 

I am sure others will correct me if I am wrong ... but if your car is a 'standard' MY03 UK STi with PPP ... it will be a single scroll ... for the most part twin scrolls are on Japanese (JDM) imports

 

Hi Harvey, why is it more prudent on the twin scroll?

 

Fair play guys can't fault you!

Thanks for the info regarding the blower rookie mistake

So in order for me to achieve the 400bhp marker I will defo be looking at the FMIC route will I, so with the other mods minus FMIC and the management for a few months or so lol ( mrs gonna be waiting a while for her shopping trip me thinks!) I'm looking to see a health 380ish give or take with a better spool than my standard single scroll (gettin there lol) as ideally I want quick scroll and would like to avoid FMIC untill day comes I take the plunge and build me a motor!
Is the standard ecu fairly workable these days? Management is definitely on the cards at some point it's just gonna take some saving (bloody house and it's bills!)

And Kev are those prices inc vat?

Thanks for your replies guys much appreciated got a lot to learn me thinks :s

 

SC40 or SC42 will be good choice for you,about the TS yes agreed only JDM has been fitted as OEM

Your ECU is capable in both ways,at this level you don't need aftermarket ECU.

About the FMIC,if its properly mapped FMIC you will not see any difference in spool characteristics


Jura

 

Std ECU is fine etc. You don't 'need' an aftermarket one.

Just that it's 'harder'/takes more time/patience for the mapper to get to a decent result (due to the way the map has to be uploaded to the OEM ECU).

Aftermarket ones give the mapper more 'freedom' as changes are made on-the-fly - so he can concentrate more on the actual map's changes (and invariably end up with a superior, more optimised map).

 

Happy days then so I can work with it for now, just remeber my mate having a classic and he couldn do anything with it!

Where is there that does mapping, I have been told about powerstation that is local to me, what others are available travelling does not worry me too much within reason, or is there mapping guys out there who travel? I want to put it on the rollers and make sure everything is as it should be as I have no idea of what map or anything that is on the car I have a print out somewhere from years back so wouldn't be a bad idea to have a looksy

Cheers

 

I am currently running an wrx sti type uk, my03 and have an SC42 fitted, Ecutek remap, larger injectors, Top mount intercooler, new headers with Miltek cat back so I still have the cat in the downpipe, produced 401.2 bhp when it was mapped at Scooby Clinic.

 

I would be happy with that!

What size injectors are you running? Are standard sti 550cc and pink?

Where are scooby clinic based are they Yorkshire way?
Is it best to buy equal length headers?
And will the car loose it's burble with equal length headers?

Lots of questions I know! I'm like a kid at christmas

Cheers again!!!

 

Went up to 850cc ready for the next leap, but 650cc will do the job.
The clinic is based at Chesterfield http://www.scoobyclinic.com/ they fitted the injectors for me, they will part-ex with your old ones.
I'm running un-equal length, that is the reason for the burble, go equal and you will lose the burble.

 

Ibsti, Swindon is fairly 'near' Cardiff - 72 miles due east on M4. So BR Developments - Bob Rawle. Amongst the best.

As is JGM (Jolly Green Monster). He's 'my' lol mapper of choice - he travels...

 

Thank you for that! Think I'll source some headers and injectors first from the budget, save a little more and get the blower then be taking it to be set up and mapped, if I start buying now and stick everything to one side until I got it all, be ready to rock!

I'll do some more reading across the forum threads to see wha I can learn, I think I got a good starting point from here tho thanks to you guys! Anything to be weary of when buying parts?? I know to stay away from the look at me items on flee bay that a chocolate kettle would surpass, any particular injectors you guys or the tuners recommend that kind of thing, there are so many out there I just preferre to seek advice from the people who have been there!

Thanks again for your replies, certainly a top lot on here can't fault you!

 

Mapping is certainly an art! I suppose choice of tuners is to each individual, I'm just gonna have do my research and listen to you guys as don't want to be melting pistons (as previous tuners have done to my vauxhalls!) so will be someone who comes recommended, I have heard of a good few acros the boards on here seems like I may be spoilt for choice lol!

 

If you do go shopping for headers, Avoid the ones with a flexi joint, Ideally you want 3 Bolt ones(RCM or GT Spec) or simaler

Injectors you can use the 650cc out of the 2,5L impreza

 

Simply because the twin scroll turbo has a twin uppipe and although the runners in the uppipe are not particularly big diameter there is a lot more surface area to radiate heat from the exhaust gas flow as it travels to the turbo. For good power you need good exhaust gas temperature and what you don't want is over cooled exhaust gas en-route to the turbo.
Also as more heat will be radiated under bonnet temperature and particularly those in proximity to the twin scroll uppipe will be that much more.

 

Hi Kev,

Off topic slightly, but, over a grand on an FMIC?

 

Bargain! Cheers for tha gaz If there not a lot of difference in price then I will go for higher rated ones so the option is there to increase in the future should I want to gonna try and make this money go as far as possible but not scrimping on quality, if I can build a 400hp or there abouts motor on a budget makes you smile just tha little bit more inside, especially when u see the numpties who think there go faster stripes "400 horses bhatttt!!" and then u show them what it's suppose to go like lol

Also will I need a 3port boost solenoid?

Cheers!

 

Hi,

thats for a perrin one, we can offer a cheaper alternative for £650.00 + vat fitted, but the perrin one works and fits nicely.

cheers
Kev

 

Yep