Reprogramming Stock ECM PROM Unit

[George McLaughlin]

 Sorry if this has already been discussed, but I am interested in 
 modifying the stock ECM PROM chip in my 1990 Lotus Esprit SE and 
 am looking for some help.
 
 I would be greatly appreciative therefore if anyone with 
 knowledge in this particular area could provide some pointers or 
 direct me to some references (books, magazines, internet, etc.). 
 I am interested in all aspects of this development from 
 hardware, software, and engineering knowledge needed to 
 reprogram the stock tables.
 
 Thanks in advance.
 
 George F. McLaughlin III
 george_mclaughlin at bedison.com