my question is simple would 10 mm plug wires hurt or benifet power and fuel economy?

 

I think the only thing it would hurt is your wallet. I doubt they'll do much of anything if the ignition system is stock. I got summits 8mm wires and haven't had a problem. Insulation on the wire is whats 10mm. The conductive part will be just about the same between the two.

 

You won't have to worry about the plug wire routing TSB..... aside from that, what Kejobe said.

 

aight, thanks guys