[s-cars] Differences in ECU's?

[Michael Bess]

I am experiencing a problem with the MRC RS2 ECU chips.  I currently have
the MTM 1+ installed.  We swap in the MRC chips and the car simply will not
start.  I thought perhaps there was a problem with the chips and so got
another set to try.  Still no start; put the MTM chips back in and all is
fine.  The P/N on my ECU is 4A0907551AA.

 

Any thoughts?

 

Mike Bess

'95 S6