Which spark plug should I use?? (2001 Vmax 225 EFI)

[bassmanvt]

What is the difference between a BR9HS-10 and a BR8HS-10? Will the effects be very different using one instead of the other???

[BassinBarrister]

I don't know the difference between the two or how they will affect the engine but the manual says to use the BR8HS-10.

[craigs06]

The 8 and 9 are heat range, the 10 means pre-gapped My manual says BR9HS-10 is right. If you are having plug fouling issues, run the 8, it is one range hotter, helps with burning off the oil. You can buy BR8HS or BR9HS, just have to set the gap .035 to .039.

[bassmanvt]

Thanks for the feedback, guys. I really appreciate it.

[21XDC]