BAttitude7689

Im doing a 98GT npi motor to a 03GT PI motor and i know the 03 motor uses COP's, i was just curious are the cop's better than what my 98 motor uses with the (2) coil packs and spark plug wires?....with the swap for the time being im going to use my old coilpacks and wires just didnt know for the future if i change the computer and speedo if the newer COP's would be worth it or even better?

amoosenamedhank

I did the change from wires to COP to simply clean up the engine bay... and I didn't want to relocate the coil pack with my supercharger.

cliffyk

The COPs are at 2-3 times better, with solid firing potential of 45kV to 55kV per plug vs, 25kV to maybe 40kV from a high performance coil pack. Then there's the fact that you don't need to buy plug wires every 30k miles or so...

While it normally only takes 15kV to 20kV to ionise the gap and fire the plug, having that overhead helps when things are not happening normally...