What would you do next ?

[_jac_]

My car is a 02 sti prodrive with an APS wing mount induction… 3’’ meerkat exhaust

From turbo to tail with no cats and an Andy f map…All the whiteline kit and tein coillovers… brakes are standard gold brmbos with red stuff pads…

I am looking for more power that will kick in at low revs, more of a b road blast than

A drag strip monster… Your knowledge and experience would be much appreciated

Cheers

JAC

[st3ph3n]

Obvious choices - Either porting your existing headers or getting a new set like the GT Spec or Gruppe S or such like.

Upgrade the turbo, this is a great read - http://andyforrestperformance.co.uk/16307.html

[RA Dunk]

like stephen says , turbo upgrade (prob a 18G) for the faster spool up time compared to the 20G and aftermarket headers

[_jac_]

will i have to remap if i fit the headers..

the 20g on andys site looks as good as the 18g is there a big difarance..

[st3ph3n]

On a "standard" 2 litre block the 18g will spool up quicker than the 20g. You're going to have to work the revs a bit more with the 20 to keep it on boost. But you'll get more top end with the 20g. I'd imagine if you want big numbers the 20 is the choice, but from A to B there'd be nothing in it.

Email Andy and tell him what you're looking for and I'm sure he'll give you a good answer.

I think you'd need the remap for the full benefit of the headers.

Oh and you could do the current done thing and switch to running 10% methanol and 90% V-Power.

[fai17]

I would fit the turbo and headers at the same time but if you could only do 1 at a time,i would fit the headers first and then the turbo followed by a remap.....

18G will spool up quicker and will give about 370bhp,20G will spool up slightly later but will give 370 to 400bhp..

For B Road blast i would probably go 18G and can do Crail @ 12.4sec as proven by G.Green in his bugeye STI.

But either way both turbo will be great.

[_jac_]

thanks St3ph3n

not sure what to get first the headers or the turbo... do you have to have the car maped to run 10% methanol...

[_jac_]

hi Peter

the only think is the turbo is going to give me more bang for ma buck

[fai17]

And yeh the meth is a good idea too....use high boost for V Power + Meth and low boost for V Power only ala G.Mac style[]

AndyF will be the man to ask..

But if you went for meths too you may need to run bigger injectors as G.Mac is running 95% injector duty cycle.

Plus by then you've done all that you are probably best changing for some Samco Hose like turbo inlet and I/C hose set.

and you may need a oil catch can turbo too.

It's never ending once you start....and forgot to say that a Boost Controller will be a good idea too.

Chill and think about it.

PS...Why are you not at work by now?

[_jac_]

ma babys crying. its feeding time BRB

cheers

JAC

[_jac_]

PS...Why are you not at work by now?

wednesday is dads day with robyn...

[fai17]

PS...Why are you not at work by now? wednesday is dads day with robyn...

Nice one...i wished i had a day off work to look after my kids...

Just put 10% meths in my car and it's absolutely flying....yeeeeeeeeeee haaaaaaaaaaaaaaaaaaa

Well worth it for the meth...works out cheaper than V Power at 60p per liter..

[_jac_]

whare did you get the meth from

[STi_Bandit]

Really Intresting thread this [Y]

If going to the sort of 360bhp mark would it also not be advisable to fit an oil catch can?

Bandit

[_jac_]

Yes bandit most peps are saying that… Looks like that’s a must…

Fai 17 oil can is set up differently than the usual one’s I have seen…

Not sure how it works…

[mctwistuk]

And yeh the meth is a good idea too....use high boost for V Power + Meth and low boost for V Power only ala G.Mac style[]

AndyF will be the man to ask..

But if you went for meths too you may need to run bigger injectors as G.Mac is running 95% injector duty cycle.

Plus by then you've done all that you are probably best changing for some Samco Hose like turbo inlet and I/C hose set.

and you may need a oil catch can turbo too.

It's never ending once you start....and forgot to say that a Boost Controller will be a good idea too.

Chill and think about it.

PS...Why are you not at work by now?

Peter,

What are the advantages of fitting the oil catch can?  Why is it needed?

 

[fai17]

You'll need a oil catch can for a few reasons.

1.Because that you are running the upper extremes of your engine's capabilit,you'll want the fueling to be spot on.

2.When running more power your crank throws oil up the breather system which in turns get oil into the turbo inlet hose.Oil get burned away by the engine once oil goes through the turbo.

3.This inturn lowers the octane value of you fuel by a few octane which can cause your engine to det.You know what det means.....melted pistons.Fuel + Oil=lower octane of fuel.

4.You could vent the breathers to atmosphere but the problem with is(which i've encountered)oil getting thrown under the car and hitting the downpipe or exhaust which makes your car smoke like a bandit.

5.Plus when venting the breather to atmoshere,your oil comsumption will be undetected.I used about 2 litre of oil when running this way.(Not good in my books).

6.By fitting an oil catch can,the breathers will be collected to the pipe work on the can and collecting oil as it should.Your car will be running safer as the vented oil is no longer going back into the engine to get burnt away like a standard turbo charged car.(Good idea)

7.Running the above system is absolutely fine until you have to empty your oil catch can...Say that your scooby sump holds 4.5 litre of oil when at normal level but when running your car hard like on track or back road,your car will breath/vent oil through the breathers into the oil catch can.If your 1 litre oil catch can becomes full that means your sump only has 3.5 litre of oil(low level)...this can be dangerous if undetected and can need to engine failure.(Not so good)

8.By fitting an oil catch can that is baffled and returns oil to your sump is probably the best idea.Cossie engines are prone to breath heavily so the system that i've got on my scooby was really based on Ford Cossie Oil Catch Can system.

9.By fitting an oil catch can you will need to block off the holes in your turbo inlet hose or replace it with one that has no holes in it like the samco one which you can get from RogerClarkMotorsport.But i think it might be for a 3" turbo inlet only.

This retail at £217.88 + vat.

10.The oil catch can that i've got is what is listed below but i got the pipe work and fittings from Pirtek.The fitting replaces the sump plug and the oil return hose is steel braided rubber oil hose and rated to over 120 degrees.The other hoses are just normal oil hoses and doesn't need to be heat proved.

Cosworth Oil Separator (All Cosworths)

£110.00 exc VAT

£129.25 inc VAT

 

No fingers was hurt when typing this.

I hope this can help yous all that are looking for an oil catch can.

I think i'll need to go for a wee nap now.

Just ask if you need anymore help/info

 

[mctwistuk]

thanks for that Peter.

some nice reading there.

 

[_jac_]

Who is running an 18g and 20g turbo on a new age wrx/sti…?

I would like to hear your comments on spool up and lag are you happy with it…

Would be great if someone took me for a spin…

Cheers

Jac

[fai17]

Who is running an 18g and 20g turbo on a new age wrx/sti…? I would like to hear your comments on spool up and lag are you happy with it… Would be great if someone took me for a spin… Cheers Jac

The only guy i know that has a 18G on STi 7 type UK is Greg Green but he's not on this forum...so i'll need to pass on that one.

Ypu cpuld always ask gumball as he had a 20G on his STI 8..

[scoobaroo]

All that typing Peter, your gonna need a "lie doon" m8 []

Great info tho buddy [Y]

p.s. can you get a "MONEY" catch can Peter??? as this would be a of great help to me, and others on this forum [] [] [] 

Marty.

[jamie_wood]

Fit an oil cooler.

Look after the engine you have just now. No use trying to fit one after its been cooked.

Just my tuppence worth.

[drb5]

I'd be surprised if he see's the oil temps getting too high if it's only to be used on the road, Jamie.

IMHO, the money could be better spent elsewhere.An uprated thermostat will help oil and water temps enough.

[jamie_wood]

I'm hearing you Dave. Fair comment regarding the road driving V the oil temp.

I guess it can depend on the driver and his manner of driving.

I know that for the likes of K Hill and tight road sections , ie.twisty sections where the cars not out of 2nd and 3rd and not getting a good flow of air through it, the oil cooler makes for a worth while addition.

Hot oil =thin oil= Rattle rattle[]

Dont think many folk bother with these as they dont make a noise, look shiney or make it go any faster.

However[:|]

[fai17]

Dave...what an uprated thermostat do and do i need one?