Misfiring 3 & 5 idling up and down

[Ampstunner]

1991 Nissan 300ZX Twin Turbo. I have deleted the A1V, the EGR, plenum, and carbon canister. I have also completed the prvr removal and bypass. I've added new injectors 555cc, new plugs gapped at .35 , new exhaust and a manual boost controller. The coils are good. The car is misfiring at 3 & 5 and idling up and down. Please help

[centralcoaster33]

Your CAS comes to mind, but I don't really know. Maybe look into that. You've already found the thread I was thinking of. There's more. Keep it up. Try the FSM while you're at it. Service Manuals link is on the top of each page here.

Welcome to NICO Club!

[Ampstunner]

put in a new computer from Z1 Motorsports it stopped the idling up and down and misfire on cylinder 3 measure the time I was on 15 degrees cylinder 5 still misfire getting fuel and Spark but don't know if the spark strong enough change coil packs around a spark plugs around still misfire on cylinder 5

[centralcoaster33]

You can check your ground wires I think. And your fuel injector. And the spark plug itself.

[Ampstunner]

put on a new PTU check and clean all wire connections check the injectors still misfire on cylinder 5