there are a few solutions for RB coilpacks misfiring problem,
1. splitfire coilpack
2. buy new standard coilpack from nissan original parts
3. buy kedai potong coilpack
4. run coils from other cars (example - mitsu...
Finally, went to dyno tuned my 7AFTE by using emanage. Found out i was running freaking rich whn offboost. I was being told my injector was too big for my setup as Im using GZE 365cc injector