I can;t believe the difference in the power my truck has not that i put that accel high perf coil on it! I just put it on last night and there was an instant change in the way my truck idled. (it used to start idleing rough if you let it sit for a couple min) When i started to drive it this morning, there was an even bigger increase in power! i guess maybe the computer is "getting used" to it, but it seems that after i put that coil on it, it unlocked the true power out of the rest of my mods! (pace setter headers, k&N intake, 180* thermostat, mopar spark plug wires, accel coil) I can't believe the difference that it made! easily the best mod that i have seen so far. I have a distributor cap and rotor that i am putting on tonight that hopefully will have a small effect too, but godness gracious i forgot how much of a pain in the a$# it is to even get to the cap in our trucks, let alone change it! lol i just wanted to let everyone know who was thinking about mods and havn't gotten a new coil...Accel coils are WELL WORTH THE MONEY!!!!