Helping my mechanic

[Lonestar10]

They got some pedal from someone in Oregon or Ohio that sent them a wiring diagram and harness to make this one work which for driving does but I don't think it has an idle validation switch to cut the signal from the pedal when pedal is fully released it's a floor mount pedal instead of a firewall mount like my t680.

My mechanic figours it will be blown up or some other catastrophe as it's a isx600 cm2350 with what he knows is bad programming but the owner has drunk the Kool aid and thinks it's fine... Let's just say they found the {big-name trash tuning} box wired into the 9pin that was causing the 9pin not to function for diagnostics and that's probably what smashed a piston through the block on the old motor.