had api build a sti spec engine for my98 uk
until i can get the money together to map it properly i bought a 1s ecu from an sti followed the wire swapping instructions
( swap the cam and crank sensor wires (B136 pin 8 and pin 10, red and white wires) and also move the fuel pump relay wire from B137 pin 17 to pin 7 (IIRC green wire).)
car starts and runs fine but on boost its stuttering (boost only set to 0.7bar) all the way up the revs any ideas what the cause of this is and how to rectify this till i can get mapped
cheers in advance willie

 

to make it work properly you will need the sti maf maybe the 440's unless your uk model has them and the correct sti turbo for that ecu other wise you are asking another dead engine and no warranty as im sure api wouldn't cover you for this,
in my opinion put it back to how it should be and then get it mapped asap.

 

Get it mapped asap, drive it off boost if you have to drive it, will be a lot cheaper in the long run if anything goes wrong would be my advice, good luck, Gaz.

 

1S ecu comes from a 97 WRX, not an STi. The STi ecu should be 6S for a 1997 car or 75 for a 1998 car.

Whichever ECU you run, you need to make sure you have the turbo, MAF and injectors that match the spec of the ECU (i.e. that match the car the ECU came from).

 

cheers guys will remove it tonight and not drive it till i can get it mapped

 

**** me!!!!! someone who actually listens to advice.

 

you can still drive it mate when its back to standard, just don't drive with the mods you have fitted.

 

yeah what i ment is no driving on boost goin to arrange to have a simtek fitted and mapped by andy f

 

bigsinky aint that what advice is for so u listen to it
dont wanna **** ma car after the money i just spent building it

 

I think he was referring to the fact that a lot of 'stalwarts' on here give good safety advice to relative newcomers.... Only for it to, more often than not, fall on deaf ears.

But not in your case willie... So congratulate yourself lol

 

car now has simtek fitted and been mapped by andy forrest

 

Engine spec... supp. mods... power... torque...?

 

Wise move by the OP ... I've heard of people "accidently" hitting boost in un-mapped cars which have then gone BOOM!

TX.

 

Lol i did to you said dont fit a manual boost controller and i threw it in the bin now saving for map with supporting mods cheers for the heads up again

 

To op

 

you're more than welcome

 

engine was built by api
.25 oversized pistons
closed deck block
sti 9 crank and bearings
roger clark oil pump
version 4 sti heads and cams
440 injectors
vf23 turbo
full blitz nur spec system
front mount
blitz induction kit
probably more but my memory is ****
power around 320 bhp with torque around the same

 

Which brand of pistons? Properly forged jobs?

Which rods?

 

unsure m8 would need to check with david at api

 

They'll be Supertech forged pistons and NEW Sti 9 rods. We are the official UK Supertech dealers now.

Well done Willie got you there in the end.

Good Luck David

 

Nice spec motor then.

6sp/SC46/mappable ECU/remap now on the cards, Willie?

 

joz just been mapped on simtek to 320
6 speed and bigger turbo and a few more mods before goin for around 500bhp

 

cheers for that david ment to give u call about it but been really busy
need to give u a call about something soon

 

Oops sorry, totally 'forgot'. I'm getting old.


Really?! You're gonna go for it? Awesome!

 

500 would be a stretch on those rods 450 / 460 would be OK, I am happy at that.

I bet you've got a good tan Willie, sitting about on those roofs all day long ........

 

Pun intended?

 

Well spotted, I wondered if anyone would.

 

lol