Nt11

iTrader: (1)

Gorgeous wheels I always wanted some of these on my old car . Pricey buggers

Thanks for the advise I'll get saving when I get back from
Holiday and I'll play around with the calc

Cabbage

Hello guys, rookie alert!

Been looking at getting myself a hatch and was wondering what you make of the one linked below?
http://www.autotrader.co.uk/classified/advert/201505183562423/sort/default/zero-to-60/fast/model/impreza/onesearchad/used%2Cnearlynew%2Cnew/radius/1500/maximum-age/up_to_8_years_old/colour/blue/make/subaru/engine-size-cars/2l_to_2-5l/channel/cars/postcode/gu124nu/usedcars/page/3?logcode=p

Seems pretty good but that back box worries me, doesn't look like a pro drive or am I wrong? Also any common faults I should look for?

Thanks Josh

Benji554

iTrader: (18)

Definitely not a Prodrive. Looks like a Hayward and Scott twin pipe back box. It Doesn't look as good as the quad pipes in my opinion. Price looks ok though if the mileage is correct.

ericooper

What power do people run on a stadard turbo?
I was qouted 370bhp by andy forest on Vpower with a pannel filter and decat, since then ive fitted injectors and fuel pump, and had the map adjusted by bob rawle, also got a meth map, but as i wasnt present at mapping ive got no road dyno or offical estimation as such, what do others roughly see with simlar set ups? So ive at least a rough idea of what im going at until i can it proven?

Sisti

I am looking to remove the second cat from my system, I currently have a cobra cat back system, would i get much gain in performance from removing the second cat and also is there a lambda sensor in this part?

Nt11

iTrader: (1)

In answer to about above

I've been informed that the maximum you will get out of the standard turbo is 400 anymore power than this and you will
Need a new turbo.
i was advised that with t forged internals, decat and induction kit I will be looking close to the limit of the standard turbo


As for removing the second cat, it won't make much of a difference, if you currently have a cat back system its flowing quote freely but you will need to have it mapped to maximise this. Removing second cat will
Help a little but removing both cats is when you will
See the best results . The pro drive package or the 330s come without the second cat and a pro drive cat back system and run approx 330 (usually actual power is less)


I'm
Currently running on my new engine and will let you know what mine makes with:
Standard 330s new engine with
Mahle forged Pistons
Mahle rods
Genuine new crank (as these are good for 700bhp)
Tri steel race bearings
Uprated oil pump
Cosworth head hasket
Cosworth head bolts
AEM Induction kit
Updated ngk iridium plugs from scoobyclinic
H&S decat pipe
Prodrive second decat pipe
Pro drive cat back (as standard on 330s)

I also re wired all the standard earths as they are terrible standard and added an additional 6 point earth kit

This will be ran on the standard turbo for now , I need to research Into other turbo possibilities but don't have a lot more to spend after having all the above done hah! Also the standard Intercooler is only good for about 400bhp.

Can anyone recommend anything else I should be doing/running ??

Adw330s

Righty guys, I have a concerning question and would like to briefly pick your brains....

I've a 330s which I have just got back after having an engine rebuild. It's been fully forged with arp studs etc. it has a cosworth panel filter, however it still has its cat on and the turbo and tmic are all standard. Now I do plan to go further with the car. But here is the problem, after running the car in i went down to have the 4k rev limit removed and the new map put on. The car only made 300bhp. Is this to be expected? They told me they couldn't get anymore out of it and the turbo was maxed out etc. So after all the work the car now makes 25bhp less then it did standard? Is this normal?

Nt11

iTrader: (1)

330s don't necessarily run 330bhp, in fact the pro drive map is very flawed and a big contributor to why the 330s engines go bang !

First off I'd say when a new engine is first built its very tight and usually takes 10k miles before its loose and running better, so if you was to map again after 10k miles you will get more power. However this being said the standard turbo is capable of 400bhp as I said above. Forged internals doesn't again necessarily mean more power, it means a stronger engine. So to only change internals and then map and achieve 300bhp isn't great however it may be down to the fact the engine is still tight, and the exhaust and turbo maybe still have oil deposits causing the flow to not be maximum until it's all burnt out ?

Remember the 330s is the same as the standard sti just with pro drive exhaust and map so the engine running on standard map is approx 290?

Nt11

iTrader: (1)

Also as far as trying for more power ?

Decat and induction kit should see the engine run at its true potential on standard turbo and tmic.
Also this goes without being said, however a lot of people forget to do this.. Make sure the engine is running as cool as possible. You would of had the coolant changed already so now I would say make sure that the turbo and everything below is allowing the least amount of heat to soak up to the tmic, when I put my decat on the standard turbo heat sheild no longer fits so I wrapped the downpipe and cat, purchased a modified stainless sheild .
In addition to this I would say get the cold air flowing into the intake as best you can. If you are keeping the standard air box make sure the restrictor (white box) is removed from the bottom of the air box, and get a forced cold air feed pipe in there , I removed the blanking plate from the back of my fog surrounds and cut a few Swiss holes in the rear of the bumper around this area to allow more air through without conpromissing strength or looks. Better yet do all this and get a good induction kit fitted, AEM have proven the best gains with their kit and sits directly behind the mentioned fog light so even better !
Let me know if you would like an induction kit, I'm currently in talks with AEM about a bulk order to keep cost down.


Im currently trying to seek info on upgrade turbos as to go above 400 this will be needed along with a fmic.

I'm guessing that with this injectors would be a good shout , but this is where my knowledge currently stops

8ulldog

iTrader: (4)

Seeing as we are on the subject....

The standard STi centre pipe is 1 piece whereas the ProDrive comes in 2, is there any difference in this to performance?

clyne 08

Anybody fancy a well sorted WRX 405bhp?
Mine is mainly used by my wife as I work away. I have spent a ridiculous amount of money on it, but have now decided I want a type r for myself and a separate family car.

https://www.scoobynet.com/subaru-444...l#post11700312

Nt11

iTrader: (1)

Pro drive is in two pieces due to the first bit being the second cat decat pipe! I believe they are both 2.5 inch pipe work though . I believe the centre pipe is actually still Subaru just pro drive second decat and back box!

Apostle

Gotta say that something is very wrong here... Sorry.

BIG QUESTION... Who mapped it ? And who rebuilt it ?

VF48 on the tmi with a little extra boost than the 330 map will make 340-350 with filter. No problem.

Saying it maxed out at 300bhp is bollards UNLESS it's atwhp ?

Maybe getting another opinion would help

A

PS. I'd recommend a sportscat exhaust making a genuine - happy 355-360 and leave it there. Anything after 400 is a lottery on a 2.5 (yes even forged).

Apostle

Yep.... when I added headers to a similar setup as yours I gained 60lbs in one swift hit 😎 RCM

And the Perrin intake hose will help too ✅

I ran 390/430 on that ....

With meths I reached 405bhp but the tmi was struggling so forgot that one.


Any further mods cost quite a few big ones more to step up. Wisdom is to stick at 400 ' ish or be prepared to toss another 'few' grand for not a lot more oomph.


A

Nt11

iTrader: (1)

Thanks dude,

Perrin intake hose ? Can you link me ?

If I'm looking at headers does this come with a up Pipe or will I need this too ?

domino46

My vf48 with a billet conversion made 397 before it maxed out ,, now running 420(different turbo) but have maxed my injectors now ,,, a well built forged 2.5 can handle good power as I'm going for 500+ and it shouldn't be a problem but only time will tell lol

Nt11

iTrader: (1)

Is the stock turbo on a 330s vf48?

Edit - just checked and I see vf48 printed on my turbo IHI turbo

So for the lowest price what's the next turbo up ?

adamobie1

New HTA splitter ��

Ryanj1993

Anyone interested in my JDM hatch??

This STi has the much stronger sought after 2.0L engine instead of the weak 2.5L found in the type UK versions. Aswell as this, it also features:
VF series Twin scroll turbo
AVCS Heads
Stronger revised engine internals
Equal length exhaust manifold
Nitride coated, cross drilled crank
More aggressive inlet cams with 8,000RPM redline (UK version is 6,200)
I/C Waterspray, manual and auto mode
13:1 quick rack steering - heavier feel than the UK version which can feel too light
Standard STi suspension
SVDC - Subaru Vehicle Dynamics Control
Revised electronic DCCD with revised centre diff control unit with additional sensors and auto diff controller
Top Mount intercooler
Short shifter 6 speed gearbox with taller 5th and 6th gears (limited to 112mph due to Japanese regs, can be taken off but never got round to doing it, goes to show car hasn't been thrashed within an inch of its life)
Brembo brakes
Full Fast road Geometry setup
Xenon Headlights
Push to start engine / keyless entry
Air Conditioning
Electric windows/mirrors
Climate control
Full Japanese service history and log book.
New Exedy pink clutch fitted 6k ago
Full service @52xxx using castor 10/60 oil
New battery
HPI clear
Additional Modifications:
Sigma alarm system
Extremely rare R205 rear diffuser
STi Front splitter
STi wind deflectors
Very rare STi strut brace with flexi
Defi Boost gauge in carbon pillar pod
STi shift ****
Custom made alacantra gear gaitor and handbrake sleeve
Carbon interior trim
Tinted rear windows
Kenwood single din head unit with bluetooth
Almost new 18” Bronze Rota Force Drift alloys (not one mark on them)
Vredstein Ultrac Sensatta tyres less than 3k on them
The car has been meticulously looked after, washing it and polishing it once a week with a clay bar one a month, the car drives fantastically and has been a pleasure to own, it is with regret that i am forced to sell the car. I will thoroughly miss the car but i know the next owner will love it as much as i have. The car has never been on a track and has been used as a daily car with a 10 mile motorway commute.
PM if interested Price is £16,000

Nt11

iTrader: (1)

Ryan put up some pictures here it sounds like a really nice car ! Glwts

Gambit

iTrader: (6)

is it my imagination or do the intercoolers on the STI hatches seem to take more of a battering with bent fins etc? than over newage sti?

a lot that ive looked at recently (just window shopping) all seem to have sustained a lot of damage, are they just made of thinner meshing or something?

ericooper

Im looking to change my 3"-2.5" decat to a full 3' decat, do all new age decats fit the hatch? What do people make of the £150 ebay jobies?

Thanks

ericooper

So new headers are worth doing? Im at a simlar point to you on a maxed standard turbo, do thry reslly free up do much tourqes?
Also do you all rate Intakes? Im still on a stadard air box as chevron said that flowed ok for a standard turbo

Thanks

kev m

I have a brand new set of 330S Wheels for sale.

https://www.scoobynet.com/wheels-and...-114-5pcd.html

Apostle

Rallye Sport Direct USA should sell you anything Perrin.

Dump the up-pipe and get a Harvey Smith slip jointed stepped pipe ie it reduces at the top (others call it Venturi design) this will help reduce spool. If you fit the fat standard RCM up-pipe you'll gain 300-400rpm on the spool. The HS one gained just 100rpm.

Alan & Martyn @ Enginetuner were gobsmacked that a simple swap of headers and up-pipe made over 60+lbs torque. Outright bhp wasn't particularly effected as the turbo was already at the limit.

IIRC I went from a genuine 365/365 to 390/430 with the headers swapped in plus a Perrin intake and Teflon manifold spacers.

Nt11

iTrader: (1)

I have AEM intakes for sale if you need one

The difference that I have seen the 2.5 make mapped with and without a intake is 10-40bhp depending on the other mods.

If your turbo is maxed why are you thinking of changing headers, decat and induction kit ?? I would upgrade turbo along with fmic and induction kit and then look at headers and up pipe . I wouldn't bother going full 3 inch decat unless you're having a full 3 inch system . Even then the difference it will make isn't massive compared to a 2.5 system . Especially if still running stock turbo

Nt11

iTrader: (1)

Nice thanks I will think about all these and price them up !

Nt11

iTrader: (1)

So even if my turbo is maxed bhp wise I can still gain torque from changing parts that effect the flow

Apostle

Post above re : headers.

The intake hose is worth some power and some throttle response ✅

The standard air box is probably ok up to 350 above that it will hinder.

The Perrin CAIK is the best on the market. It is an excellent bit of kit. It has vanes built into it around the 'correctly sized' MAF plate which make a big difference when mapping at low end / smoothness. I had the Forge / Litchfield trumpet and pipe and it caused fluctuations with inconsistent readings due to turbulent airflow ie never the same 100% of the time. The AEM unit is good also but only the Perrin has the unique design. Martyn @ Enginetuner was very impressed with it compared to all others...

Do it once - do it right. Perrin products are pricey but very good quality.

Ohhh. one last tip. Grimmspeed boost controller - another superb design... I think they and One other firm use this Manley design valving for crisp sharp boost (think it was called that).

My theology wasn't so much about ultimate power but a great drive with ultra responsiveness... Yep also recommend the Forge recirculating bov now I've said that. Sharpens everything up ✅

A

Apostle

Yes. Although related, bhp and torque can be increased independently to a degree. Slamming on a moosive turbo will make huge bhp but not necessary huge torque.

Looking back .... Bang for your buck wise.... headers were the best. Don't forget the map tweek to release the potential and keep it safe.

Personally I wouldn't again run more than 400+/- on a 2.5 for longevity / reliability issues. Buy a 2.1 or go 2.3 if you want big power. Or better still stick at 400/430 and save lots of money.