A friend is telling me Iridium Denso 4 platinum spark plugs are better than Bosch Platinum 4 plugs. 300Zx drivers and mechanics, what do you think ?
I'm using Bosch 4 plugs and saw a small improvement in performance, better engine response and gas mileage over the Nissan dealer plugs the previous owner paid for. I cleaned the throttle plate too, probably the first time since a human has touched it since it left Japan.
I don't know much about Iridium plags but Bosch ha been around a long time and is used by many German car co.s and many of the parts store chains stock Bosch now. Everybody weigh in with your opinion and or experience. No flip flop, please.
Wild Bill