Hi gents

got a problem the cars not fast enough!!! a 2005 55plate hawkeye STI

bought the car 5 months ago and just had the following done at Brian Downies

Uprated Plugs
Turbo XS DV
GDR 3" turbo back exhaust
Uprated Fuel Pump
Zen Remap

am guessing the cars running over 300bhp with this spec but its just not doing it for me....

any ideas bigger turbo...injectors...which route to go without spending epic monies....

 

unfortunately without spending a wedge you aint going to go faster. give us an idea how much you would like to spend and we may be able to advise you.

 

Thing is that your engine is not capable of taking much more that 350 bhp,so for any turbo changes you need to forge it first

 

Let's say 2k

How much would a forged engine set me back?.

 

i'd say time to get a superbike if thats not fast enough mate lol

 

Lolmsuper bike for me = early death! What should my car be running with this spec? 350ish?

 

Forgot to say any ideas what turbo my car has?

 

Could buy a evo?

*awaits abuse*

 

Lol did look at evos but prefer the sti it's my 7th one!! Sold my e60 m5 for a house conversion and bought another hawkeye lol!!

 

You probably have VF 43 turbo and you are somewhere in the area of 350 (or at least you should be).

Forging engine would cost you around 3k (+ labor),turbo 1,7k (or second hand),injectors 500, FMIC depends on what you want and a remap.

Should get you to 450/450

 

Holy **** man 7th! Im on my first impreza and im a tad bored of it, but mine is only a wrx.

Not fancy another bmw?

 

sorry fella £2K ain't going to get you much. a 2.5 engine I wouldn't take past 350hp (though others have). drive in drive out forged engines at API, Engine Tuner and API are all about £4 - 5 K

 

Hi Martyn I love BMW's but the only problem is living 5 miles west of ellon, the roads are always wet and sludgy, I could only exploit the M5 twice a year when it was dry LOL the rest of the time it wasnt in M mode due to the ever impending fatal wrap around a tree during my daily commute !!!!

with the scoobies you can drive at mach 10 all year round without batting an eyelid!!!

 

4-5K i guess thats not too bad, what is needed I need a full list so I can cost it up.

 

You can just go for forged pistons and uprated head studs.
That should be enough for reliable 400bhp with suporting mods.

 

is that all that I need + turbo..??

 

I would also go for uprated oilpump and injectors.
With TD05 20G that will certanly get you near 400figure
and not spending a fortune

It all depends what u want and how will u use your car.
For a daily driver that's the setup I would go for.

 

thanks for the replys

am not one for chasing figures just want a car that scares me abit!!

so

uprated oil pump (what type do I need?)
injectors (what type 600 700 etc)
turbo (20G)
Pistons (i can get a small discount on cosworth parts which ones do i need?)
Head bolts (as above)

this will give me a fair bit more power 380-400ish and a reliable engine (even for track work?)

thanks for all your help guys!!

 

Hi there

Please contact few engine builders for engine upgrade options.

As above 2.5L is not best material for tuning,when is non forged

But many people went with Cosworth pistons,12mm ARP studs(head bolts),Cosworth Head gasket set and forged rods(K1,Manley etc.) etc.,if you are want little bit more speak to Alyn@AS Performance about the doing CDB conversion on your EJ257,which will be worthwhile if you are looking above 500bhp

Turbo and injectors depends on power what power you are want,for 380-400bhp SC42 or trusty 20G should be OK,injectors 650cc should be enough for 450bhp,I would add fuel pump,TMIC can be limiting factor,but you will see

Hope this help

Jura

 

thanks for the reply Jura, am not looking at going much over 400 as this gets to costly. I already have an uprated fuel pump so the list looks like this;

Pistons (Cosworth)
Bolts (Cosworth)
Gasket set (Cosworth)
Forged Rods (Manley)
Turbo (AFP 20G)
Injectors (Power enterprise 650cc)

I will get costs for this shortly and look into the CDB vs above.

 

will you get away with the top mount intercooler. on a 2.5 I would be looking to get the block pinned as well. If I am spending a sizable wedge on forging the engine I wouldn't be taking any chances and I would be trying to make it as safe as can be. don't forget acl main and rod bearings, seals, new oil pump, new modine, oil filter, oil, better plugs, new timing belt. will your clutch be up to 400? the 6 speed will definately take it but will your clutch? allow another couple of hundred for bits n bobs. All plus labour of course. it soon mounts up doesn't it.

As my old grandad used to say. £2K son?, that wouldn't get your a sh1te at the railway.

 

why would you give advice like this. you obvoiusly haven't been around to many 2.5 engines.

 

That's true but oem rods and crank should cope with 400bhp with no problem. Or at least that what I've read/was told.

I'm going the same route and my plan was to keep oem rods, crank and just go for forged pistons and ACL bearings. Maybe also pin the block.

Uprated oil pump, 12mm head studs, uprated plugs and new timing belt kit + water pump + oil modine etc that are things that I would always change when rebuilding the engine.

Can you please write the minimum spec of 2.5 engine that is capable of handlying 400bhp?

 

And if my granny had ***** she would be my granda. shoulda, woulda, coulda. should cope with 400bhp. A real honest to goodness 400 hp. not pub talk 400 hp? on a 2.5 with oem rods and pistons? good luck with that one.

I would be changing the rods

That's the most sensible thing you have said so far

for a genuine 400hp using SUL, i would be doing rods and pistons and having the block pinned. don't believe half the stuff you read or are told by blokes down the pub. speak to engine builders who have done 100s of these engines. listen to their advice. for most of the well respected subaru tuners on here it is a passion not just a business so they will go out of their way to ensure you get the car YOU want. They will also not fill your head full of crap saying you need this, you need that. they will work with you and your budget to get the most out of your parts and your conversion. speak to alan @ enginetuner, david@api or mark@lateral who will all give you sound advice because they have done this 100s if not 1000s of times.

 

Thanks

 

Hi guys thanks for all the replies!! going to bring the newyear in with a bang and go forged!!! some Harvey Headers + Uppipe and a map tweek for now.