I never used one of the adapters, I did this. http://www.gearhead-efi.com/Fuel-Inj...r-27SF512-Chip Then I got a pin adapter from red devil llc (Same as the HDR1) so once I inserted the chip I did not have to remove it to program. I bought a complete spare computer off of ebay for $25 shipped. I purchased the parts off ebay. You need to be good at soldering and removing solder, or expect more problems.