Originally Posted by 32krazy!
not sure why there would be any differences. the entire driveline computers and suspension come right out of the discontinued slk32 amg's. i can swap parts with the srt and the part # are identical. the issue with yours could be the modded tcu's. perhaps theres a file that was messed with that caused the limp mode. i had latemodel21 (chris) ship me his oem tcu from his spare slk32 and it worked without any issues at all. reinstall my modded tcu and all my datalogg issues returned. i can easily swap the tcu with jhm2k new srt-6 and confirm the swapability or not when rob sends my thermalcoated intake parts back.
All that I can tell you is that I have tried 4 TCU's. 2 Modded and 2 stock in 3 different SRT-6's. The only configurations that worked were the original TCU from that car, and that the information that I recieved from Rudy and Jerry indicate that the Crossfire TCU is car/vin specific until physically chipped. Also, there is a difference between the original coding version of the EGS controller, one car is 2 versions changed from the other. This is appearently part of the problem with one of the SRT-6's not accepting the full TCU mod.