I am getting 6# pulley and getting my chip reburned dont I need to get knew plugs for the new pulley.

 

Yes. ngk tr6 gapped at .042

 

Or denso It22's gapped at .038

 

what would be the better of the two to get?

 

People say that the Denso's misfire less than NGK's and that they are overall 'better plugs'...........but that for the price, the NGK's are just as good.....some people have even gone back to them from Densos, saying they didnt notice much difference. NGK's are $20 and Denso's are much more.

 

What about the Bosch +4? I thought they were almost the same as Denso's on that misfire chart?