everyday's a learning day.. this is supposed to be fun though - remember.  there's clearly a big difference between downloading tunerpro, XDF and mpps and changing some tables and logging the results - to following the programs in assembler. of course I dont know how these ECUs work - that's part of the learning isn't it - I originally thought they were event driven, then I assumed they were on a loop. I'll work it out - there so much information here to help.  (I am pretty excited about looking at this, not done any assembler since about 1987 at BAe apprenticeship writing org100 TSRs - leaving that job was a big career error)

this is the wrong forum for this thread

Yeah, I know B5 is the sole UK seller of the ignitron ECUs - someone has spent maybe a million £ creating a solution you can get for £1K - which does most of the work for you, and gets rid of the issues like not using of actual load for fuelling only desired <-- seems mental doesn't it, plus the launch control toys all included.

(it'll be mental if some of the dis-assembled code in the ignitron code, has comments and variable names from threads on this forum!)

Thanks for you help