Then if we use the NA to B8T, should we have a safety factor of 2? Example, 100,000km down to 50,000km - idlings = 45,000km? Or stick back to the specifications? :_:
i just buy 1 set spark plug for my evo7,MS851336 NGK PFR6J-11,but plug cable not very fit,i feel i already wrong to buy,anyone can tell me this set for what engine?