Is it possible to flash like this ?

[Kci-sti]

Hello all,

I have got a 2003 STI JDM ECU (ref : AH581-5122).
And I would know if it's possible to flash this ECU with a rom of a 2006 STI JDM ECU (A4TJ121B-ST)

When I Compare these roms, all data seems differents.

But these 2 roms are 160Ko.
Maybe the hardware is different ?
These 2 cars are 2.0L Engine with Twin Scroll Turbo.

If the car don't start, it's not a problem, but I am afraid to not be available to reflash my ECU with my stock rom.

[Hyper]

yeah, it should work

I am thinking about trying 06 RAC map on my 05 RAC mylsef

[Kci-sti]

Can you test First ?

[Hyper]

ok, I found out something today

in my case it will work, in yours no

they changed the neutral position switch in 05+ and if you flash the new map, your AVCS will stop working (don't ask me how I know )

[Freon]

Unless you know for sure that it will work, I would not ever flash a ROM onto a different physical ECU. Even if the file size is the same. People have toasted ECUs doing this.

[FrSTi]

they changed the neutral position switch in 05+ and if you flash the new map, your AVCS will stop working (don't ask me how I know )

I guess you're right : I noticed they made some changes in the 05+ codes so that ignition is automatically cut when shifting gears (not the case on previous roms)...

[Hyper]

Unless you know for sure that it will work, I would not ever flash a ROM onto a different physical ECU. Even if the file size is the same. People have toasted ECUs doing this.

meh
I am running AF481 map on my V9 RAC ecu


ps
they also tweaked MAP calibration in 05+

[daddyhaw]

IF your cars is stock, I have a good rom for that car.
I have been running it on my car (same car) for 4 months now. Runs sweet,especailly "up top".

[Hyper]

if you are talking to me, I'd love to take a look at it

[Kci-sti]

So do I!!

The car is rather stock except a FMIC and a full 3" zorst... IMO it's what I call std.