

going to have a metal HG put on next month, for a stock engine what size do i need?


http://www.gtschris.com/store/comersus_ ... dProduct=4

there is a choice of 3




im guessing its the 1.0mm one, but if im going for a bit more power is it worth going for the 1.4mm to lower compression slightly?

any advice would be great.



