Has anybody bought and used one of their Firepower ignition kits on their 5.2 or 5.9. I saw their ad in a truck magazine that with their coil, cap and rotor and 10mm wires you can see a drop in E.T. is this true are they really that good?

Last edited by 11secdart; 10/30/14 08:39 PM.
68 Dart 410 / 904
92 D150 original owner
21 Ram 1500 Quad Cab, Big Horn , Hemi ,4x4
23 Audi Q5
16 Honda HRV