Hi! Greetings from Finland. I found this forum when searching for .XDF for my daily driver, a 1988 Chevrolet Caprice sedan. It's been fitted with ultra tall gears causing the engine to almost stall when TCC kicks in. This is the main issue I'm trying to fix. Other things include adjusting the fueling to make it run better with regular E10 gasoline. The ECM says 1228063 but the engine is 4.3 liter V6. I hope it's the correct ECM for this engine.

My other cars are 1986 Buick Electra STW with CCC Rochester and 1983 Buick Electra STW with MegaSquirted TPI. I also have a 600cc Honda Shadow custom but it's not equipped with fuel injection or anything digital.