Computer chip for 1990 200TQ

[phamh@dt.wdc.com (Hien Pham (Phamh) x7669)]

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