×

Sale ends todayGet 30% off any course (excluding packages)

Ends in --- --- ---

Impreza STi GC8

General Tuning Discussion

Forum Posts

Courses

Blog

Tech Articles

Discuss all things tuning in this section. News, products, problems and results. 

= Resolved threads

Author
540 Views

Kinda a mixed issue between wiring and tuning. I am doing a installation of a Link Xtreme G4+ on Gc8 WRX with a STi Version 8 in it . I am merging the oem loom to a link loom .

I have been having the issue below and I have double checked the wiring and according to the oem and link pin out I am almost correct . When I say almost correct I have found some differences between link and oem manual .

Fp speed on the link is C15 and C16 while oem is C16 and A13 . I have wired it as oem and the car starts and primes (don't have the starter switch wired which I believe shouldn't prime but it does) .

I would like to know should I have B134 (A1) pin 1 or B136 pin 9 (C9) , I have C9 connected as per Link .

I have connected A5 and A6 together (not sure if I have to splice 1 of them or both to the ecu or not) .

My issues at hand is that I pwm the isc , boost solenoids , vvt solenoids etc. They do not click . My auxilary outputs a1 and a2 now both on idle say ON when in run times but in the Digital reads 0 . I have also adjusted the lockouts for the vvt so I know in terms of settings there is no issue there .

Any help would be great help .

TIA

"Fp speed on the link is C15 and C16 while oem is C16 and A13 . I have wired it as oem and the car starts and primes (don't have the starter switch wired which I believe shouldn't prime but it does)"

Fuel pump signal is output on both C15 & C16 to suit all models. A13 is not used - this is just a diagnostic signal from the pump controller. Not sure what your question is about the fuel pump?

"I would like to know should I have B134 (A1) pin 1 or B136 pin 9 (C9) , I have C9 connected as per Link" .

A1 is the speed signal, not nesecarily needed but good to have for idle control lockouts etc. C9 is the tacho signal to the dash and DCCD if fitted.

"I have connected A5 and A6 together (not sure if I have to splice 1 of them or both to the ecu or not)"

These are to control the main relay, they should not be connected to the ECU at all. Generally A5 would be connected to A6 via a diode so the main relay cant back feed into the ign circuit.

"My issues at hand is that I pwm the isc , boost solenoids , vvt solenoids etc. They do not click . My auxilary outputs a1 and a2 now both on idle say ON when in run times but in the Digital reads 0 . I have also adjusted the lockouts for the vvt so I know in terms of settings there is no issue there"

Have you confirmed they have 12V? Are you using a low frequency (~10Hz) when testing so you can hear them? Not sure what your actual question or problem with the VVT is - why are you looking at a digital input? Have you done the VVT calibration? Are there VVT targets in the target tables? What do the Bank 1 system status and Bank 1 signal runtimes show on the runtime screen like below?

Thank you Adam for the reply .

I do not have C16 in my loom it's been cut off for some reason . Tried to see if it was somewhere just lleft there but not luck . I think I will have to install new wires . Basically from what I found out the loom has been chopped and rewired different wires going else where . They had the A5 wired to another wire as well as A6 with the AC . I have made everything according to run values work correctly and will be starting tuning it . Meanwhile I will be ordering wires and sheathing to make new looms interior and engine .

Thank you very much !

What Im saying is some models have the FP control on pin C15, some have it on C16. Therefore on our ECU both of these pins are connected to the same output - Aux 7 so that all models work. It is correct that your car will only have a wire connected to one of these pins.

Thats for clearing that up . I was confused cause I saw the wiring being a mess and I had only c15 and the c16 was cut off so I though something was wrong. AS well as mentioned above a lot of wires where done differently which is why I believe the oem ecu was fried as well .

We usually reply within 12hrs (often sooner)

Need Help?

Need help choosing a course?

Experiencing website difficulties?

Or need to contact us for any other reason?