126 replies to this topic

[boostin]

Eh?? It goes up to a connector behind the battery.

[h8wrx]

oh lol okay ill have a better look tonight

[Reuben]

I have my o2 sensor on the downpipe, by the turbo. The TT one has a long enough lead to reach.

[h8wrx]

okay got the car going a few problems have arisen thus far

1.Steering light in dash is on
2.ABS light is on
3.Car feels like its running 8-10psi, I havnt put a gauge on yet to confirm, but its a STI RA V4 ecu and should be set to about 15-16psi, im not running any boost controllers just the stock v3 boost solenoid , everything is stock,(followed this thread exactly lol)
4.car overheated as soon as I drove it for 5 mins i changed the radiator with another as the original one wasn't getting hot, and fans weren't turning on, top hose was hot and bottom cold. new radiator in and fans turn on, car overheated still but not to the top of the gauge more like 3 quarters, bottom hose still cold, even with fans turning on... heaters blowing out cold air on full heat setting, and can hear bubbling behind dash, now im going to try a few things to remedy this, does sound like the heater is blocked, Im going to bypass the heater core and change the thermo and see who that goes.
5. did a CEL check and it just constantly flashes no particular code.. I would've thought the 02 sensor
code would've come up as its not connected but it didnt lol

any help or opinions would be great
thanks

[boostin]

1. Is the PS pump plugged in?
2. Dunno, do a diagnosis.
3. Does the hose between the turbo and wastegate actuator have the restrictor pill in it?
4. Heater core.
5. O2 won't throw a code for fricken ages. Do a D check - plug in the greens by themselves and go for a drive until the CEL starts flashing. That will tell you everything you need to look at.

[h8wrx]

1.there is a plug contected to the pump but nothing om the loom..??
2.diagnosis?
3.no
4.going to bypass it tonight.
5.will do it.
Results to follow

thanks for the help

[boostin]

Have you changed the engine loom?

http://forums.nasioc...ad.php?t=192583

[h8wrx]

Nope loom is factory, i can't seem to view pics, for some reason oh thats why Im not a member there lol

[boostin]

Have you changed pumps then? Or is the wire to the rack broken or unplugged? Yeah, you need to sign up.

[Reuben]

Very very few of those problems are related to the single conversion. In fact, I would say only the boost issue, and the boost issue alone. Did you swap wires at the ecu end to get the STi ecu talking to the correct boost solenoid? If you don't, the STi ecu's talk to the solenoid in the front left guard.

As for the rack, are you using the original gt rack, or did you install an impreza rack?

[h8wrx]

Have you changed pumps then? Or is the wire to the rack broken or unplugged? Yeah, you need to sign up.

yes I changed pumps, as the new eng came from a later model bg-c type so it had a kink in the power steering line into the pump, and the one I have in the wagon was a straight pipe into the pump, so used the orignal pump for the car.

i havnt checked the plug to rack just yet. will do when I get back from my welly trip this weekend.

[h8wrx]

Very very few of those problems are related to the single conversion. In fact, I would say only the boost issue, and the boost issue alone. Did you swap wires at the ecu end to get the STi ecu talking to the correct boost solenoid? If you don't, the STi ecu's talk to the solenoid in the front left guard.

As for the rack, are you using the original gt rack, or did you install an impreza rack?

fixed boost issue I had the restrictor pill in the wrong hose! lol and might i just add "DAMN THING IS A ROCKET LOL"
im extremely impressed with the cars performance the vf23 pulls effortlessly its faster then my RA at the moment lol

rack is orignal to the car
cheers

[Reuben]

Welcome to single turb'd bgs

[dangerousiball]

Thank you for this write up, This conversion guide worked great for me. I would of never got the electrical side of things right without this, and was planing to do a full loom and dash swap. Cheers again. Also I put a impreza steering rack in whats the best way to get rid of the warning light on my dash ?

[Wiretap]

Take the bulb out.

[Reuben]

Take the bulb out.

This. It is redundant, impreza clusters don't even have em. The light will come on in the steering solenoid is not working right, impreza racks don't have a steering solenoid.

[gt legacy]

Iv gt 93 gt legacy tht had this conversion dun its runs algud until i go up hills thn check engine will cm on iv been told tht the ecu tht iv gt in it is still the twin turbo 1 the ecu is n r6 n it gta mines chip cud this b the problm n wud i haf 2 change 2 a v3/4 ecu

[Pelvin]

Don't take this the wrong way

I've got a 93 GT Legacy that had this conversion done, it runs all good until I go up hills then the check engine light will come on. I've been told that the ecu that I've got in it is still for the twin turbo, the ecu is an r6 and it has a mines chip, could this be the problem and would I have to change to a v3/4 ecu?

[boostin]

More than likely. Twin turbo ECU's don't like single turbo conversions.

[gt legacy]

Ok is there ne way i cud check this cos it drives swt until i gt 2 the hill it pulls hard all the way 2 redline its only whn i try 2 cruz up ynui hill