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Hello everyone, I have a 97 Sup. with AEM V2. Running 114 race fuel on 22 psi (formerly at 32 psi a month ago) and the lower psi is to see if this was causing 5 months of misfires and occasionally significant bucking. Oddly enough the mystery was and is when the tuner has the laptop hooked up and dyno tuning the car does NOT misfire and runs perfectly. Once I drive it home within about 20-50 miles the misfire begins. This has been the scenario for 5 frustrating months with a lot of time and money spent especially with the race fuel. The car has had in that time, new ID 1000 injectors, new Denso coil packs, and many different spark plugs. We, the tuner and I are at a complete loss and I'm about ready to drive it off a cliff. Any ideas or suggestions would be immensely appreciated! Thank you.
 

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Check the coil wiring....as old as these cars are getting cracked wiring further up the harness is common.
 
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