Burton9104

So... after I had the granatelli coil packs and boot kit for approximately 9months and wonderingwhere my throttle response and low end power went... ( not to mention my latest problems of breaking up on the highway about 4k rpm), I swapped the stock coils back in and the car runs like a dream. Car has a HO vortech and full exhaust no cats... ANyone ever use the HO coilpacks with similar luck? I am currently in a warranty battle over the 500$ broken product...

07Grabber

Get rid of those granatellis, no coil out there is any better than factory coils, more than enough spark to ignite the air fuel mixture 99% of us are running. I work at dealer and except for part failure there are no performance issues.

hawgman

Another graduate of the GMS coil packs are crap school.

RodeoFlyer

99% of their stuff is junk. get the rotors though - "lifetime warranty against warping and cracking"

BoidMorphs

There's a lifetime warranty against warping and cracking because once one or both of those things happens, their lifetime is up so the warranty is nowno longer validLOL.