just wondering if the classic wrx sti ecu is a straight fit on to a wrx 1993/4 , they give more boost dont they

cheers

 

6k is the best one to fit i've recently fitted one to my 93 wrx although i seem to be having a an odd boost problem i think as i don't know 6k map

 

how much did you pay for yours

 

i was talking to the chap that supllied and fitted my exedy clutch with recon scimmed flywheel , cambelt and oil and filter "castrol edge for £510 , little plug for him , real good bloke

Ignition Motorsport

anyways he said if i put the sti ecu on it - it may have the problems you talk of , what exactly is yours doing !!
he said i may have to put in larger injectors to copensate . i didnt understand all of what he was saying as i am new to subaru

 

it will fit if its from the same year but u may find ur self with running problems and losing power sti's run bigger incectors as standard also more aggressive maps.

as there std internals are stronger there for have a higher rev limiter i wouldnt advise you redlining ur wrx engine if u fit std sti 440cc injectors you may get away with the running probs but still run the risk with the rev limit

 

£51 (plus p+p) of ebay
6k ecu was mapped for td05 16g (standard early turbo) and 380cc injectors so larger injectors won't work properly.

The car goes like fecking stink now (i went from standard early wrx ecu to z4 (94-96wrx ecu) then to this and the improvement is dramatic) i'm having a rolling road session to see what is actually happening.
My car has an induction kit and decat and that's the only mods and i'm hitting fuel cut which WASN'T happening with the z4

 

whats the limit on the wrx

 

Well the redline on your rev counter is the limit (7000rpm) but there is no need to redline it as at about 6-6500 rpm after that the power seems to drop.

 

so what you running now the 6k with a remap

 

no 6k is in there NO remap (that's about £500+) and is fine BUT the boost problem is odd,it boosts fine but it's how and when it boosts seems to be the problem,since i know it hits fuel cut i don't boot it at the mo (although the fuel ut isn't as violent as it was on my original ecu).
Rolling road session is on Fri afternoon so hopefully i can get some answers/solutions,my car is old so some bits may be showing their age.

 

benny has a w6 of his sti wagon 95 reg

http://mail.google.com/mail/?attid=0...0ab7678f1eb0e1

http://mail.google.com/mail/?attid=0...0ab7678f1eb0e1

will it fit my 93 reg

 

Yes but you it's the same as yours basically (U8,W6,2C are the early import saloon ecus) so i don't know why he's got 1 in his wagon

 

cheers ill lok about for the 6k , and good luck for friday let us no the outcome

 

heres 1 on ebay

subaru impreza sti ecu 93 on eBay, also, Subaru, Car Parts, Cars, Parts Vehicles (end time 16-Apr-09 21:30:23 BST)

 

thats not a sti ecu, its a standard wrx ecu. a sti should run ok in a wrx. seems starnge you have problems myblackwrx. yes, the injectors are the same on early sti and wrx,
380s

 

off boost it 's fine but on boost it has a fit.

Rolling roaded the car today,was checked for leaks etc,tried another MAP sensor (as this came up as an error code),tried another boost solenoid (which definately was OK) and still had the same problem it seems my particular 6k had issues controlling the boost so have had a Dawes device fitted.
I would guess this is a particular problem with MY car as each car has it's differences.

It was r/r at 270bhp with 206 at the wheels and i'm quite happy with that

 

"it seems my particular 6k had issues controlling the boost so have had a Dawes device fitted."
what is it and what does it do !

 

Dawes device bypasses the boost control solenoid so you can increase/ decrease boost as required.

 

is this the one i need for my 93 wrx to upgrade

http://mail.google.com/mail/?ui=2&ik...0b55f5b6cc66ce

 

what boost are you now running at because if the wrx cant handle the sti ecu i.e more boost is it worth putting on !

 

about 0.9bar which is what the 6k should be running.
like i said it's more than likely something to do with my car as it's very old, parts on it maybe need replacing.
The garage i took it to ,a subaru specialist,couldn't understand why it had boost problems.
The car was also driven with the Select Monitor (official subaru equipment to check the health of the car) and got odd wastegate readings as well.

 

what boost does a standard wrx run

 

0.8 for the 93 wrx BUT that is max boost i get more boost now through the rev range.

 

got ya , just bought the ecu so ill be fitting it next week along with the full 3" pipe just need to get an air filter now , whats the best sought to get !

 

keep with the panel filter, i think i shall be going back to panel filter myself

 

Just out of interest what do you need to do to fit the ECU from a 1995/96 circa STi to a UK turbo saloon car? I have gone down the Z4 route and to be honest the car did not feel all that much quicker the when it had the D7 in it....

 

really i'm learning from the lads above but from what i can tell is , you 've got to use one from an sti of around the same year like you say and really it sounds a little trial and error and be carefull untill you now its running ok , personally im going to fit mine then take it to a specialist near me who advised on it and he's checking it over for pinking and inncorect detination with some sought of tool . anyways the above will give you better advice.

 

just fitted the 6k ecu and it hits the rev limit a 7 1/2 thou rpm is that right ! its not something i'm planning on doing it was just that initial trial to see how it went.

what difference am i looking for in performance ! it may be me but it didnt feel a great deal different, maybe revved quicker and accelerated quicker ,
myblackwrx what did you notice with yours.

also i have the check engine light on now , how do i get rid of that !

any info lads would be appreciated

cheers

carl

 

Acceleration was a lot,boost was held longer in the rev range,max boost was increased,spool up seemed quicker (this was when the thing was working fine).

It's rated at 275ps iirc

Didn't get the CEL coming on Scoobypedia | Trusted knowledge for everything Subaru | Scoobypedia / Scoobypedia under the heading 'ECU' tells you how to manually check error codes or you could get a Select Monitor plugged in and that shows up what it is wrong (any Subaru or subaru specialist should have one).

BUT this has been happening https://www.scoobynet.com/general-te...-readings.html

I've now returned to my Z4 (plus manual boost controller) and i seem to be getting the power (need to get it r/r) that i was geting with the 6K (no manual boost controller)

 

just done a Manually Reading ECU Codes and i'm getting back --- Turbocharging Pressure Control Signal , what do u think