T42 cpu ?

[GNXClone]

I bought another E40 off eBay. Hopefully I'll be able to flash it with the A4 GTO OS. (Its out of a Malibu, but has the correct part# 12596679)

I read the GTO T42 I have as well. Then loaded the image into IDA and set the processor as 68030 (I don't have a 68332 option). I've just finished changing everything that looks like code into code. It looks reasonable:

ROM:00009774 ; ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦ S U B R O U T I N E ¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦¦
ROM:00009774
ROM:00009774
ROM:00009774 sub_9774:                               ; CODE XREF: ROM:loc_94B2p
ROM:00009774                 movea.l #$FFB840,a0     ; Prepare to transmit SeedKey (Note TCM id's itself as an engine controller? $10)
ROM:0000977A                 move.b  #7,(a0)
ROM:0000977E                 move.b  #$6C,1(a0) ; 'l'
ROM:00009784                 move.b  #$F0,2(a0)
ROM:0000978A                 move.b  #$10,3(a0)
ROM:00009790                 move.b  #$67,4(a0) ; 'g'
ROM:00009796                 move.b  #1,5(a0)
ROM:0000979C                 clr.b   6(a0)
ROM:000097A0                 clr.b   7(a0)
ROM:000097A4                 jsr     nullsub_2
ROM:000097AA                 rts
ROM:000097AA ; End of function sub_9774
ROM:000097AA

I'm not going to spend too much time reversing it. But at least I have it now in case I want to poke around later.

-Mike

[GNXClone]

The PIM is configured with a Tech II, hence the need to find a dealer tech that can/will configure it.

I should follow this up.

I completed the conversion to the automatic in the GTO a couple years ago. I broke the T56, so I was motivated.

Along with the obvious changes such as replacing the M6 pedals with A4 pedals, installing an OEM A4 shifter, flex plate, cross member, transmission, etc...

I found a complete A4 engine/trans wiring harness from the same model year and replaced mine with it. I reflashed the entire ECM with an image from an A4 GTO. I borrowed a Tech-II and reprogrammed the PIM, and I saved both EEPROM images from the PIM in case I want to go back without using a Tech-II. I read the EEPROM from the instrument panel of an A4 GTO and comparing with mine, found the A4 specific areas, made the changes and it now displays the PRND321. (I also programmed the text display to read "TwinTurbo 2006"). I installed a TCM from another 2006 GTO.

Hmmm, I think that's it. It was all pretty much plug-n-play.

Now I'm on the path of installing a 4L80e. I'm going to build a converter box to sit between the TCM and the 4L80e so I can use the 4L60e control program.