I've talked to a local dealer this morning and learned that for $500 he can installed a computer chip in the 10V 1990 200TQ to boost the its performance which would exceed that of a 20V 1991 200TQ (only available in 1991) . Does anybody know how this works and whether or not its a good thing to do ? My mail keeps bouncing every time I post to this newsgroup . Any idea why ? -Hien