I installed a wet nitrous kit on my 92 LX 5.0. I want to spray a 90 shot currently and want to know if I can run stock plugs or should I go 1 heat range colder? It is a daily driven car but not sprayed daily.
I would step the plugs down one heat range. Usally in the instructions they let you know what plugs to use with the nitrous system. Follow there instructions and you will spray for many years. Fail to do so and it could be over quick.