I do not want to know how its done but is it to do with the electro pressure regulator? The reason i ask is i have this mod and have a spare regulator so when i next go to the rollers i can have it changed back to see if i get better fuelling.

PaulT

 

you sure its the proper fuelling mod?

 

I have heard of this before, wether its true or not i do not know? There is a screw on the back of it, and apparently u can play with this, i'd just take it with you next time you are at the tuners, and ask them.

If you find out it would be nice if you could let us know

 

The metering head on my car came from a Karl Norris set up car where the tweak was done. I know about the little screw to increase/decrease pressure but just need to know if i change the pressure actuator that the fuel mod is removed.

PaulT

 

Had this on my old s2,you take a pipe from the charge carrier to the pressure regulator but have to check the fuelling afterwards.

 

KSA-Cossie

thats to increase fuelin at top speeds!

i ve seen it done to a few motors!

must work!

PaulT

when you say pressure actuator are you talkin about the cylinder on the left hand side of the meterin unit?

if so i feel it will not make any difference if you swap it over cos you cant mod that part in anyway! you can add a vacum tube from your cross over pipe to the open end if the cyl on the meterin unit

 

Davey8oy was fitted to my car when i bought it and fuelling was fine reving to 7000 rpm .

 

KSA-Cossie



i brought me mates motor off him to strip for parts and it had it fitted too!

was goin to fit it to mine but i ditched k jetronic for cossie management!

 

I was gonna go zvh but got a good deal for a cossie instead.

 

KSA-Cossie

i fancied a cossy but i borrowed me mates for a weekend wilst i done some bits on it for him and it bored me!

it was a stage 1 4x4 saph!

if it was a 2wd i think it would have been a different story!

but i ve had me turbo to long and spent to much to sell it on to some one who prob wont appreciate the blood and sweat that has gone into it!

 

Know the feeling m8 i had mine 7 years,my saph is stage 3 and is far better than the s2 imo .

 

i should be out scarin stage 3 cossies soon once mine built!

 

[

PaulT

when you say pressure actuator are you talkin about the cylinder on the left hand side of the meterin unit?

if so i feel it will not make any difference if you swap it over cos you cant mod that part in anyway! you can add a vacum tube from your cross over pipe to the open end if the cyl on the meterin unit [/quote]

No the bit on the other side with the electrical connection normally either black or grey

PaulT

 

Still be a beantin tho lol .

 

PaulT

if ya only changin the sensor then it wont make a difference!

if ya adjustin the screw behind then yeah!

KSA-Cossie

its not a bean tin its light weight lol!

cossys weigh a ton rison: lol!

 

Happy new year to ya m8.

 

KSA-Cossie

and to you too!

 

 

All tuned RSTs should have had the pressure actuator adjusted. It's used for the on boost enrichment. It adds a percentage of extra fuel to stop you melting your engine. When you have your boost incresed, the tuner should also adjust the pressure actuator to increase the percentage of fuel added.

There is only so far you can adjust the actuator. After this, there is more tricks that you can do the the KE jet to get it to fuel more.

This system is quite crude in the way it adds more fuel. The extra percentage of fuel added may well be too much fuel lower down in the rev range, and the car loses a bit of power compared to what it would do at that particular rpm with a well maped EFI system.

My own car has had the pressure actuator adjusted and it needed to be adjusted a hell of a lot to bring the fueling up. Even now, it doesn't fuel enough to cope with 14 psi on a standard T3 about 5000 rpm. I have to change gear at 5k otherwise I risk meltdown.

 

how exactly do you do the fuel mod.

 

any body??

im really interested in learning the tricks of k-jet feuling
can any body shine some light?

 

 

do i just dril and tap a take of for a vacume pipe or plumb it into the inlet manifold???

and do i plug it into the regulator on the left hand side of the metering head?

 

Its literally just a pipe onto the end of the pressure regulator, and goes inline with the dump valve vacuum pipes etc, im not sure whether its best to have it connected before or after the throttle body however (whether u need the vacuum side of it for anything)

 

The pipe assists the regulator and makes it run lean everywhere except for full throttle. Not good really.

You need a wide band lambda sensor before you start messing about with fueling mods. Then you need to know what you're looking for on the guage.

The electro magnetic fuel pressure actuator has to be removed to adjust it.

 

Deffo not a diy job.

 

I agree i dont fancy trying it and seeing what happens either!

 

there was quite a big topic about this modification on my site

http://www.escortrsturbo.co.uk/forum...4&hl=fuel+mods