[QuickLTD]

Advance the timing in 2deg increments. If you check it it might be lower than factory spec anyway. When I had my Mustang 5.0s we would dial in 14deg initial instead of the factorys 10deg. On an 87-95 5.0L 36 degress total was what we were going for. Not sure if its the same on a Nissan motor. I know if you go to far you will need premium fuel to stop the knocking. Wich would take away from what you are trying to do. I always ran regular at 14deg with no issues. It has be claimed to give better mileage and a better burn. My right foot was too far in it 90% of the time to notice any savings lol

On that motor I would go with the Denso brand Iridium plugs for sure.

Dean