UK/Euro '99 Flash ECU Fuel Trims using Evoscan

[BlackStealth]

Yeah but there are two pins that are swapped. Does the code know when the AC is on?

Can't say, as I don't run an Euro ECU. When I had the Euro ECU in possession, I closely examined the PCB and ICs and noticed it was just basically a USA PCB with a different connector. I knew you could load the USA software in it, but there was no guarantee the pin outs would remain the same. Now that someone was brave enough to try and it, that is certainly good news. The author The-Stig says he has noticed nothing unusual, so it's best to talk to him before trying.

[Jesters Deadd]

Not all late model GTO have an immobilizer.

[Marty K.]

Set bit 2 of that periphery to 0, reflash and you should be good.

I'm confused about something though. You're not running chrome, what are you using on that ECU? I did make a Euro ROM disassembly but only handed it out to two people. Its not what you are using.

Thanks. I will give that a go.
I can't recall where I found the file for ecu flash. I downloaded it ages back when doing my initial 'research.'
Many thanks.
Marty

[Marty K.]

Thanks for all your assistance everyone.
Finally got them working.

In the end, I got them trims working by splicing into the single o2 feed, and telling the ecu it had 2x o2 sensors.
Not sure why only running with 1 didn't give me fuel trims, but got them within a few minutes of trying today.
I realise that this will not give me independent trims to each bank, but GTO's don't have this anyway, with only 1 O2.
I COULD fit 2 O2's but I am not sure this is worth the effort.
Here is a quick pic of my trims.
Trim working 6%.jpg
As you can see, I currently have 6% high trim, and need to fine tune.
Many Thanks
Marty

[The-Stig]

Hello guys, been working all hours god sends me and have sadly neglected the car a bit this year. I have run Chrome on a Euro ECU on my GTO TT MR for nearly a year with NO issues. I have 13T turbos and was planning to update the fuel pump and injectors this year but not had the chance to do so. the car has been driving great and has plenty of power. If you need any more info on anything or would like me to test or send any further info post up and i will try to help as much as i can.

[The-Stig]

ps, i also have a Zero'd out MAFT-Pro wired in as blow through.

[BlackStealth]

Question for The-Stig: Does the 99 Euro ECU support Muffler switch and Muffer valves that are found on older vehicles?

[Greg E]

Question for The-Stig: Does the 99 Euro ECU support Muffler switch and Muffer valves that are found on older vehicles?

Yes45

[The-Stig]

^what he said.

[Jesters Deadd]

It should the 99 US VR4 ecus and 98 have the circuitry already in there.