i am getting a stage 3 conversion for my sierra cosworth, its got a pace rs 500 intercoller, pace rad, dark greens, 3 bar map sensor, full scorpion exhaust, t 3 turbo siliconehoses, -31 actuator, cone air filter, dump valve, baily breather system in to rocker cover, baily swirl pot, baily alloy header tank, what psi should i run? and what psi are you people running? with engine spec? cheers mike ps i ran 16 psi on stage 1 ?

 

should hold around 22-25 psi

 

Some people suggest upgrading or replacing the original live feed to the fuel pump is a good idea as you increase the boost and fueling. Probably not a bad idea as most 2wd are almost 20 years old. Hope this is some use.

 

My Stage 3 4x4 is running about 22psi. What chip are you running?

 

IMO you should hold 22psi, then get it properly setup!

You can then get a peak of 28psi and hold 26

 

When I was getting 26 it was over boosting and missing like a biatch....

 

MSD Stg 3 evolution chip spike 28 hold 24

 

I was running 24 peak 22psi Held on the Sapph...

Al.......

 

MSD Evolution chip in mine set up at MSD 21 psi peak,19 psi held

Think the work that has been done on my engine is flowing quite well

As said above,get the fueling checked by a decent tuner m8

 

my motors set at 22psi set up an sorted by harvey gibbs which he says is about 310 on a standard t3

 

Just put a new turbo and actuator on mine, not sure of my power yet but it used to peak 21psi held 19, made 262bhp atw on a.v.a`s rollers, now im 25/26 psi and holding it like a hard-on. with a bigger turbo and some more boost im hoping for 290 atw if it makes more i`ll be like a pig in shite

 

sounds like i had better get her booked in to my local rolling road and get it set up what is the thing i have to do with the fuel line? just replace it or clean it

 

my old stg3 saph was running 24psi on a collins chip,was pure quick and got 346 bhp with t3 and a 4x4 cooler

 

24 psi and 346 bhp sounds good to me, but i will set it up at 20 psi and go from there all the bits turn up to nite so i will be out there fitting them

 

Sounds like a reasonable plan, bear in mind that being a T3 your turbo isn't going to last very long at silly boost figures. If you want to reliably up the boost from there, something like a T34 would be a worthwhile investment. It is the turbo that most people fit with a stg 3 conversion.

 

Mines got a MSD chip in & it peaks at 29psi and hold 24psi

 

26 psi peak hold 23 ish i tihnk

 

On a T3

 

Yeah!

Mine holds 25 PSI (T3 Hybride Stg 2) works fine

 

I am sure it works, just wondering about reliability

 

Greg. See my sig. What Turbo do i have

 

No problem @ all

I have the car for about 2jrs, and no problems.

He's live-mapped with this setup. And he's perfect

I think it depends how you drive the car! (good warming up, good cooling down, good service, and not full throttle all the time!)

One thing is for sure, the turbo has to work hard! So you'll have to get a rebuild in about 5jrs (depends how many miles/kilometers you make)

 

hi all, i fitted all the bits on the cossie last nite and set it up to peak at 21 and hold 19 psi bearing in mind the roads were wet, it was spinning up in 1st ,2nd & 3rd... and thats on 18's with yokahama tyres...! after the virgin test drive roll on the track days and rollin road....

 

Apologies in advance if I sound like I am teaching you to suck eggs, but...

You should really get the car checked over by a pro, tinkering with boost setup on a cossie is a big no no, unless you can check fuelling, etc... properly.
Drive it gently and get it checked out if you don't want it to blow up on you

PS: Can't remember which, but some yokohama tyres are useless on cossies, might explain your constant wheelspin - or, the road were wet

 

mines just been set up at 345bhp holding 22psi with a peak of 25psi.....RS500 cooler,T34,greens,3bar etc

 

Droped a bit of power then lammy, wonder why mate , i no its not much, but theres not much been changed on the car has there?

 

it was 286bhp when it 1st went on the rollers,im surprised rob didnt notice the power drop.....whoever fitted the cambelt did it wrong...it was 1 tooth out....this rectified gave the car another 30bhp alone.I left the tuners with an extra 58bhp....well happy

 

Good stuff mate, who did you take it too, by the way i had a slight feeling that it would be one tooth out, but i wasnt fully sure, at least you got it sorted anyway

 

took it to paul hills at engine advantages in essex ...top job too

 

FOOOOOOOOOOOOK ME does this thing shift,nearly went as quick as the fuel gauge!!!

 

Mine runs soooooooo lean if i run more than 22psi

Would not run 26 on Greens

Steve.

 

So how much could you run on a t3 (healthy) and an rs 500 cooler when set up right ?

 

22 IMO

 

Held or peak euan ?

 

Strange, we used to run 28psi peak, 25ish held with a T34 and greens. Have you checked your fuel pump ?
PS: That's on a standard pump too, now dropped boost to 22peak, 20 held following a head gasked leak, and haven't brought it back up since.

 

held mate.

the spike can really be as big as you want as you will almost always have the fuel to cover it.

only important fig is what it holds at high revs...

 

No, i have not checked the wiring to the pump.

The pump was new when i built up the car.

Steve.

 

Cheers euan.

 

Hiya, the car holds 18psi upto 5000revs, drops to 26psi to 6000revs and then drops to 22psi very slowly for the limiter, and this way you can still get the perfect AFR out of the injectors

But usually you've changed gear before it drops past 26psi so you don't notice anyway