UK300PRODRIVE - Just for clarity Pat Herborne managed to get 412 bhp / 370lbs out of my std pink injectors without an FPR but had the Solaris (renamed to Syvecs). After adding a Syvecs 3 bar map sensor, Pat was able to achieve 422 bhp / 400lbs from the same injectors. Again, all controlled by the Syvecs ECU. I did 13-14k mileage on the std engine without any probs - was sold after to a member on here.

Bear in mind that once you achieve 400 or near to it...you will soon thereafter want anti-lag etc.....

Don't forget that you will need to budget for licence fees (c £300) when you have your ecu mapped first time in addition to the "remapping".


Stealthy55 -

Stevesbluewrx - m8 not a problem at all, the fact you are able to share your experience and give feedback is a credit due in itself, and it allows the OP to get a wider audience opinion. Also fact you've done quite a bit yourself is good to know. Keep it coming!

 

The litchfield type 25 has the standard air intake + box & top mount and that pushes out over 400bhp, Only difference is the manifold isnt it, Yes i know it has a different engine & turbo but still the set up provides enough air for the claimed 415bhp.

 

IMO you don't need ARB's, suspension etc etc for this level for road use on a good newage STI set-up (good geometry and tyre choice is important for any car though)..... however they can make a positive impact, but certainly far from essential.

No one has mentioned headers and I don't know enough about the UK ones to make any comment at this power level.

Stevesbluewrx,
I did not say it could not be done. I just said don't bother... save the cash and live with a couple of BHP less.

Butty,
I can state I never made any inlet changes to my 2ltr STI apart from a panel filter and it produces nigh on 400bhp. Obviously it is important to compare apples with apples (mine is a twinscroll, but I can't see that making a difference in this area), but it certainly causes me no problems.

I do know the inlet hose on the MY02 STI is smaller than later cars.... not sure what effect it has on maximum airflow volume though.

 

Shaun, can we call it a blurry region of 350/400 where intake kits will/won't make a difference depending upon the whole package?
There's been several sizes of newage intake hoses and I seem to remember you finding out (too late after cutting it up?) that your old Spec C version was the biggest of the lot.

GAZ2293, the Mark1 T25 pushed out 350 hp with just a panel filter change. The Mark II put out 415 hp with a panel filter and a fat silicon inlet hose under the TVGless inlet manifold.
The hose I'm presuming has been added to reduce intake pressure loss (so decreasing the turbo PR) and add to air flow.

 

Butty,
Yes... appreciate the differences and of course this may effect airflow. All the later 2ltr JDM's borrowed the same inlet from the 03 Spec C's. However... when I tried a larger inlet hose (bigger than the Spec C) it seemed to reduce response and spool. lol So it was removed and the OE fitted again (or as you suggest another one as the original was cut to remove).

 

Managed to get 429 at 1.45bar on my 20g on a 2.5 with v power

 

These bug-eyes are nine years old soon, my std STI suspension was a liability when the power reached around 400 bhp, at seven years of age.

Whiteline goodies all round didn't help the tired OEM suspension do it's job.

dunx

 

Without chasing figures......my STI made nearly 400 with the below mods.

Andy Forest Performance TD05/18g Turbo
APS (70mm) Wing Mounted Cold Air Induction Kit
NGK 7K Platinum Plugs
Harvey’s Ported & Wrapped Headers & Custom up-pipe
Hayward & Scott true 3" Open-mouth, wrapped decat downpipe
Meercat Custom-made 3", non-resonated, dragger-style & burnt tip exhaust [pops + bangs]
JDM 3 Port Boost Solenoid
Walbro 255l p/hr Fuel Pump
Andy Forrest EcuTEK remaps producing 392BHP/361lb Torque
Mapped for V-Power & 3ml/L NF Octane Booster

There was also a host of suspension and brake mods which I won't bore you with.
I think you could reach your goal on £1500 or thereabouts but you will never get the definitive answer on here.

 

And I agree as I have been there done it; sold it and lost all the money I out in hence why I waited and bought bobs old sti 5 and sold it with a mater of a few hundered quid so a win win situation

And hey what's stopping the OP buying one already done then spending his money making it even quicker

Just food for thought,

 

Plus after 6 months you know there will be a post about gating to 450+ as you get used to it and 400 wont be enough and more and he will more power lol

 

Where abouts in Scotland are you from?

I am fitting Mahle pistons and rods to my Hawkeye STi next week and will pick up a SC46 turbo after the new year with the hope of getting 400+bhp.

Did Andy Forrest hold back on your mapping due to you not having pistons fitted?

 

422bhp on standered injectors
why would he want anti lag just because he has 400 bhp
£300 for licence fees.he could get a full map for near on that if he has open source.

 

JP4 – What car did the 412 bhp / 370lbs on std injectors? If it’s the WR1 then that will be a completely different set up ?!? As for Anti Lag, I don’t think there is any real gains to be had at this level is there? I have read plenty to believe that it can wreck a turbo, especially some of VF series, but then I haven’t actual read that it has wreck “a specific members” turbo

Shaun / Dunx – I agree that the standard set up should be fine for the level of power im looking at, but I also accept that the car is 8yr old, thus some items may start to fail soon. I shall investigate once the thread heading is accomplished or almost

Butty – You are you saying that the pipe work from the airbox varies from one model to another, and if so is this not just a case of changing it, surely this is a minimal cost?

Chrsipy – 429 from a 2.5…… I take it this is a forged 2.5, as the standard 2.5 internals won’t be capable of this without imminent failure?!?!

Bob r – Thanks bob, that’s what I needed to hear. Im guessing you have around £1500 in 2nd hand parts on your list, plus map. I was also wondering if the standard headers are comfortable at 400, did you change them for any specific reason?

Stevie1982 – Thanks mate, I will consider defiantly selling and starting over again once I get the car back from the garage following the engine work. As for wanting more power, who doesn’t lol!!! Those that say they are happy with the power they have with sub 400 are liars.

Bigarf – Ive read plenty of your comments on here in the past, and you seem very knowledgable, so why do you think 422bhp on std injectors is unrealistic? Yes OS mapping is what I have used in the past and I think it was fine, I will likely use Andrew Carr again, as his afterrsale (after mapping) advice and assistance is excellent. I had issues with my last car that were not related to his mapping, but yet he kept plugging me and making tweaks until the issues were resolved, this turned out to be a dodgey NPS due to the added torque

 

I was happy at 392...till I had a ride in a 600+ car again...

Mine didn't make 400+ on std. injectors.

Again, sod the numbers just get the "package" you can afford/justify...

I'm greedy and now past 400 bhp it's all so expensive, I'm having to do it in stages, heads first then 2.1 bottom end then build, map and run in, and re-map...

Good luck !

dunx

 

i think 422 on standered pinks + standered fpr is hard to beleive as mine were at 95% duty at 383bhp,and just about every one i know has had to change them to go to and past 400 especially running the standered fpr too.422 must be the highest i have ever heard of on the standered pinks with standered fpr.

 

The wr1 comes with the 255 walbro fuel pump and 500 pink injectors.

412 was achieved on these PINK injectors without needing a 3 bar map sensor. Feel free to check with Kev @ Scoobyclinic as they carried out the build and Pat Herborne there who mapped it. The car was also tested at Surrey Rolling Road shortly after and same figures were produced.

422bhp / 400lbs was achieved on the same PINK injectors with a 3 bar map sensor. Feel free to check with Charlie @ Surrey Rolling Road, Pat and Kev again.

Bear in mind that I've been running a Syvecs (formerly Solaris) since Aug 2008when it was hardly known out there! You will find most of the big powered scoobs out there are turning to this ECU due to its flexibililty, control aspects, data downlogs etc.......some are even ditching Simtek to turn to Solaris!

Anti-lag is not a must but majority of owners who reach 400 often tend to go for this....more for the sound then anything else! FYI, the anti-lag which people have put on is a fairly mild version of the real thing used on rally cars.

Some figures may be hard to believe but they are not impossible. In the past 3 months both Mike Latimer's and my scoobs have set some unbelieveable records on using mere GT35/40r turbos.

634bhp on V power only would also be difficult to believe let alone 701bhp using a gt35/40r turbo but its been achieved by Mike and I or should I say by our mappers!

We both use different mappers (JGM and Paul @ Zen/Pat H) so just incase if anyone thinks it's a conspiracy theory of making up figures!

 

Were they decapped pinks?

 

What you been doing wrong Arf lol. Seriously though 383 is not to be sniffed at, its a moddest number and I would be very happy with.... after all once you've swigged a few beers in the boozer with yer mates, the power increases right . My mrs keeps telling me its not the Size that counts, its what you do with it. Im not sure what she means though .

Sorry for sounding dumb here, but when you say 'they carried out the build' does this mean you wernt running a standard engine at the point of getting 412 on standard injectors and walbro?

The power figures on the GT is awesome and bery commendable.

I know it would be hard to say as engines do vary, but what are the standard STI 2.0 bottom ends safely capable of with the required bolt ons?

I mean a MD321 will see in excess of 500bhp right? So Uprated FMIC, larger injectors, CAIK, Plugs, full decat, uprated ecu etc etc.... Would give the 500, but I take it this is where the Bottom end becomes on the edge of reason!?!?

Ive read that folk have pushed 500 on the standard AVCS heads, so im guesing this isnt a problem, but it always seem that they are running some kind of forged build beyond 450 marker.

Sorry for the essay guys, Im obviously using this as my own little encyclopedia. I dont currently have the space in my temporary work shop nor the time to do my own mods, but im hoping to change this next year depending on how my little empire goes

Rob

 

more than likely.i kept on using my pinks right up to 500 bhp but they had been modified by then to flow 800cc by scoobyclinic.

 

I think you should start off by uprating your oil pump and thermostat as the car is over 8yrs old. No point having 400bhp and a engine failure

 

uprated thermostat? what do you mean? ive uprated my oil pump at last timing belt changed, never heard of doing the thermosstat..

 

Eddy Zerosports do a lower temp thermostat, the standard one opens at 78c and the zerosports one at 71c. Keeping the water cooler in turn keeps the oil cooler

 

A thermostat won't keep a 400 bhp Scooby alive, my temperature gauge hasn't shifted a mm from it's normal position since I bought it. Unless it's faulty it is not necessary IMHO.

450 is a commonly quoted figure for a Newage STI motor to survive.

Mine is due a refresh, but still goes like stink so I keep thrashing it and it keeps going...

LOL

dunx

 

I bought one of therse for my last car, but never got round to installing it, and believe it or not this was bought off ebay

http://cgi.ebay.co.uk/Subaru-Impreza...item43a2d97b4e


Rob

 

You'll be wanting to add cooler plugs to your list (£60 NGK 7's). My injectors were at 94% duty cycle on an 18g at 392 bhp. You'll probably need a 3" decat too, 2.5" will probably restrict around 350/360 bhp.

You will definitely have to do something with the brakes and suspension. My first step took me to 330-ish bhp, with ds2500 and hoses the brakes still felt the weak link. At 390/400bhp they just wont cope with a spirited run.

 

Engine was box standard (semi closed deck block) before and after Scoobyclinic carried supporting upgrades to take it too 412 with pinks. This standard Block was sold a few months to a DaveGarrett, a member on here. The set up by Scoobyclinic was spot on and it made the power. My current set up is spot and its made the power.....as JGM (simon roe) said on 22b re my current build....it 100% credit to Chy @ Pennine Subaru, Mark @ Lateral and my mapper(s) Paul B (Zen) and Pat Herborn. What a team to have!

Bear in mind, that you cannot simply compare what I got to another car as the set up will be different be it air induction intake/turbo, chargecooler type and most important the ECU with mapper. Unless (and I believe Shaun may have said his previously) two cars use exactly the same supporting products of upgrades more than likely you will get varying figures. Not many have achieved 400lbs at 4.2k on pinks running with vvt heads.

Thanks re GT35r power - not yet finished and more to come.

As for the limitation of the 2 litre std blocks, it would be wise for you to speak to 2/3 tuning companies/mappers/suppliers (lateral performance) who will be able to give you more of an insight view and recommendations which will be much more vast. Start with Kev at SC who should be able to give you possibly reasons as to why they managed to achieve the figs on mine and then work your way round.

Steathy55 is running a 2ltr std block with a bolt on and his is making in well in excess of 500+ on an MD321 turbo!

 

looked into this myself and top and bottom is your/my aspirations are on the "edge of the envelope" going the cheap route. if you want to be "safe" (however reliability is never set in stone) then you should go the internals route etc. imo, in todays market for a "daily driver" regarding insurance etc. it is too much of a risk if money is not readily available as with myself! leave the "big power" to those that need it weekly on the track where they can actually use it without fear of losing their license, these cars are quick enough without the "pub ammo" imo. lee

 

Define "big power"?

I would say the rule of thumb for a sti is:
standard power 280 - 320
mid power 320 - 450
high power - 450, certainly 500+.

The cars are quick enough standard, but then to have a standard car would surely be boring after a period of time if your a petrol head?

How many Subaru over 5 yrs old havent seen power mods during the cars life...... im guessing not many in the grand scale of things.

Rob

 

shame on you

 

Update..

Ok so its been a while, but im now moving closer to the required mods to get what I'm seeking.

3" Full Decat (Fitted)
GT30 (To fit)
CAI (To fit)
CA Fog Feed (To fit)
FPR (To fit)
Standard 550cc injectors, Up-pipe, Headers and maybe a 255Walbro.

Do you think I need a larger fuel pump?
Anything else required?

Thanks,
Rob