NefMoto

Hello,

I have 2016 VW GTI 2,0TFSI and installed turbo and other bits from 2016 VW Golf R 2,0TFSI. Both ECUs have same HW ID 06K 907 425 B which is SIMOS 18.1 but different SW. Can I flash GTI ECU with Golf R SW if I change powerclass to match cluster? Or will immo still block engine and brick ECU?

Thanks much.

What !!!! the engines are different compression , cams , and much more .

And? If you can get the ECU working then the least of your problems will be getting the ecu mapped to run!

Yes you will need to change the powerclass, but the main problem will be the Immo. unless you overcome this the car wont start.

I swap turbo , inter cooler, engine. Tall project.  ;)

Thank you, why immo would be main problem? I haven’t touched immo. I use my orig ECU.

Sorry I thought you wanted to use the GOlf r ecu on your car! Just stick with the original SW and tune the car accordingly, by far the easiest way to do things and you can get the car running nearly the same if you take the time. To cross flash the ecu is more involved than just flashing the ecu with another SW version, trust me!

Whilst there are differences in the engines they aren't or shouldn't hold you back too much

I was notified from tuner that we must use Golf R SW version because of variable cam phase control. No way to control with 1.8 SW.

What involvement to cross flash ECU? Both have identical HW ID numbers. Can it be flashed with R software if powerclass is changed to match powerclass in cluster?

In first post you have a 2.0 engine, now you have a 1.8 engine suddenly.

Which one is it then?

Sorry, 1,8TFSI

So is that a Polo GTI 1.8 TFSI or wtf is going on here?

Yes Polo GTI 1,8TFSI orig HW 06K907425B. Can I flash R SW if powerclass is changed in ECU to match cluster? Don’t want to brick ECU like this guy :o https://www.ecuconnections.com/forum/viewtopic.php?t=64560

No you cannot, a Polo GTI is not an MQB car, it's a PQ and I doubt the rest of the car will talk to the ECU after you do so. So no, I would advise you against it, and take this from someone who has probably the most experience in crossflashing non ME7 VAG stuff on this forum (ahem, I know I'm modest).

You don’t kill so much ECU but be afraid for be kill by your modesty  :D

Thank you I know we’re in for tall project. If powerclass is changed in 2,0 R SW to match PC in cluster will engine run or brick ECU like in above link ?

Make full (!) backup and try it. Do not use cheap tools. But i bet nothing is working correct anymore. It´s not only powerclass, it can also be another immo generation. Also communication to you car can make problems. Another ESP, no 4wd, etc...

I guess I confused. How can it be another immo generation if both ECUs are Simos 18.1, HW ID 06K 907 425 B ? Thank you.

Because hardware has nothing to do with what software it's running.
If it's a Polo GTI you have a whole different CAN matrix. Most likely immo comms are different too.

A few hints, and sent messages.
Message formats are different too.

Also I think you need to find another "tuner".

You don't want someone tuning your car who doesn't know the difference between MQB and PQ.

Thank you, I think we send car off to graveyard now.

Or you make me a reasonable offer and deliver the goods to you.

Ahhhh pascal pascal pascal....

It will never work, and it will never start because of different communication.

Of course it can be made to work.

Simos 18.1 ecu will talk to a mk5 tfsi if you know what you are doing so I see no reason this can't be done.