R03B Upgrade for version C02C or newer is $125 and $175 for the real old ones. The older ones need some extra board wiring changes via land cuts and wire jumpers because we did a board update for C02C. The new R03B upgrade uses a new microprocessor plus some other IC changes and total new software. More diagnostic tests from main menu and more programmable parameters. New ECU $285. I can send detailed PDF manual over email if you send me an email at
[email protected]. Bob Price, 206 Breakaway Rd, Cedar Park, TX 78613.
512-897-9770