[Shotimes] Chip Help

[ROBERT SCHIRMER]

Guys

I am thinking about getting a chip for my '93 ATX. The only other upgrade I
have made is a 80 mm Pro-m MAF.

Any recommendations on chip manufacturer, or about getting one where you can
do the programming yourself on a hand held  programmer, versus sending one
back to the manufacturer all the time. Would the chip have to be reprogrammed
if the exhaust system gets upgraded in the future?? Approximate costs??

Thanks
Bob