Installed a MSD box 6a BTM.
Chevrolet Blazer (1994) - Beast

Installed a MSD box 6a BTM, This bypassed my ecm's signal to the computer what a headache. The trans would not shift anymore, But I fixed it by installing a quick 4 shift controler unit. Pretty neat unit I can now pre program shift points I could even add paddles or buttons to shift with.
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