R Rm125man Member Jul 23, 2002 5 0 Jul 23, 2002 #1 What it the preformance difference between a NGK R4118S-9 and R4118S-8? I know is hotter then the other. what part of the power band will it effect
What it the preformance difference between a NGK R4118S-9 and R4118S-8? I know is hotter then the other. what part of the power band will it effect
M Moto Squid ~SPONSOR~ Jul 22, 2002 853 0 Jul 23, 2002 #2 It won't change the poweband. Don't change plug heat ranges to compensate for rich jetting...change the jetting.
It won't change the poweband. Don't change plug heat ranges to compensate for rich jetting...change the jetting.