My friend doesn't believe me that going from STOCK spark plugs to aftermarket plugs (bosch platinum +4) and having the fuel pressure regulator set at the same that i won't feel anymore power from the plugs alone.... he said it can only combust in a 1 way, so i'll only THINK i am feeling more power, but yes that 1 way is more efficent with aftermarket plugs....... correct me if i'm wrong but the more spark the better combustion, which means more hp? Am i right and dyno charts or articles posting this topic would be helpful.