ok here'* the deal. I swapped out pull wires on the weak cylinder and even changed coil packs. The problem is still there. Could weak cylinder on the code scanner mean weak fuel injector instead? The car runs great when I dump a can of B-12 chemtool in the tank but when I just run normal 91octane fuel it runs like crap. I'm out of suggestions and don't know where to go from here. Currently the car is throwing no codes it just doesn't rev up or have any power. Acts like a carbureted vehicle that needs a good adjustment. Help me if you can.
2001 Grand Prix GTP stock, 115K
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