Originally Posted by vze3r85p
How much did youpay for your plugs? Do you feel the power?
The plugs were $38.99 and available at GrandPrixStore.com
. I did a few other things at the same time. NGK plugs, Taylor 8mm wires, Fram fuel and air filters, and a 180 thermostat. Overall I defineatly feel an improvement. It'* smoother and faster through the entire RMP range, smoothed out my idle, and runs cooler
. From what I understand, Iridium plugs are now OEM equipment on the new GM cars, or at least some of them.