Hi, I have an 03 XB9R and im wanting to change the plugs and was wanting to know what plugs people have had the best luck with, any info would be great, Thanks.
In my 03 xb9r I had the best luck with the NGK iridiums. They never fouled and seemed to have the best response. Use the forums search function for the specific part numbers. There are several threads on plugs.
I use the DCPR9EIX, as do most others I've seen - though I've also seen some use the 8 like ^he^ said. The 9 has a cooler Heat Rating than the 8 is the only difference and why I went with it.
I tried BRISK Premium LGS part number BOR12LGS and I'm very happy with these. This spark plug is a semi surface fire type spark plug and features four ground electrode and silver centre electrode.
It work best with a remaped ECM or race ECM, not worse to try a stock ECM.