am running some ngk 6 series plugs @ a 40gap i got my timing way retard to
To try to stop the ping it works but i got a lose of power because my timing is retard so much am going out to buy some bkr7 plugs @ a 32gap will be able to UN-retard my timing some with the new plugs and stop getting miss fire past 10 psi

And has any one tried the boesh Platinum +4 plugs in there car how are they

sorry for the grammar am in a rush

 

40 seems kinda high. I've had success with the 7's, no platinums at around 28-32