Upgrading STi03
 

At present my car has,

2.0L (UK)
Full de-Cat
Ported headers
Andy F Tek3
APS CAIK

It retains the cat in the up pipe as advised by Harvey until a new pipe is manufactured with ECU fix.

I want to achieve circa 400bhp and 400lb/ft, I know the turbo of choice is the TD05 20g or the 18g.

What other things should be taken into account as I don't want a domino effect as in if you do this you will have to do that sort of scenario.

Probably looking at injectors, fmic and warlbro fuel pump, might even need an sx reg aswell.
Best bet is to chat with Andy, he can help you far more then the majority on here.

I thought new age sti didn't have a cat in the up pipe?

HTH

I thought the Sti didn't have a cat also but I am assured it is there.

Maybe the 03does But the 02 deffinatly doesnt,I'd take a look you may have a nice suprise and find theres not one there.

When I had the headers done I was told "there is a cat in your up pipe"

Shouldn't be a cat in your uppipe Alan :confused:

What do you mean ECU fix ? Full decat is no problem re CEL's

Andy

Perhaps Harvey could elaborate, When the Headers were being done this is the info I was told, I personally wouldn't be able to tell a catted pipe from one without. Harvey did offer me a catless pipe but said it wouldn't run properly or the CEL would come on and I may have problems.

I'll mail this link to HS for him to peruse;)

Have you any TD05 18g's you don't want Andy?

Loads Alan :) As long as you have some money you don't want ;)

If you are up this way anytime I have an 18G on my WRX now, test n try before you buy !!
In fact, its for sale shortly, buy it for your wife ;)

It is currently running 370-380bhp on an Sti intercooler. Your std injectors will cope with this power.
To go over 400bhp gets expensive with fmic's, injectors, headers etc

Andy

Do you do part ex on the turbo's Andy? ;) I have bought a car off you before mate and it didn't last too long:)

I don't normally take IHI VF series turbos as exchange as they tend not to be reliable enough for selling to my customers (who generally are going for high boost/power levels) Having said that, they are a good stage 1 upgrade on a WRX or UK 2000 so I may reconsider.

ps, that last car you bought is going quite well now, he is almost catching me up !

I have seen it at Santa Pod a few times but almost might as well be nowhere.

Could you pm me with a figure then for a TD05 18/20 with a px on my vf35;)


Cheers

What about going the twin scroll route??

good luck with this.

im currently running 385bhp & 340lb/ft on an 04STi with TD05/20 from AndyF

What does it drive like compared to ppp or a tek3?

I would like a bit more torque than 340, i'd like 380 if poss and I have been told the torque figure from the twin scroll would give be this.

bloody quickly

mine aint that slow:)

Do you have a power graph?

Did Andy map your car?

thanks for the graph;)

What other mods are you running?

Car was mapped by Chris @ WRC Tech.

List of engine mods:
WRC Technologies top mount intercooler (similar to APS)
APS 3” full decat stainless exhaust
APS twin vent dump valve
Ecutek remap
APS cold air induction
Prodrive fuel pump
Elabtronics automatic intercooler water spray controller
Andy Forrest TD05/20G hybrid turbo
GT Spec unequal headers & up-pipe
APS FRP/01 equal length fuel rails
PE 650cc injectors
Blitz dual SBC boost controller
NGK PFR7 spark plugs
Roger Clark Motorsport oil catch tank