I've been looking into those things. A number of different compays all sell them. Msd seems to be the best. Does anyone use them, are they worth it, how well do they work. And most important using them on automatics, does it matter
I have it on my car and I know people are going to argue with me but this has to honestly be one of the best mods I've done. The car responds much better, feels more torquey. I haven't seen an increase in gas mileage then again I haven't regapped my spark plugs and my mileage has been horrible for a while now. I had a problem in the beginning but I resolved those with a lot of help and effort from MSD. Awesome staff.
Can't help you, I've got the Screaming Demon set-up myself. I think it runs/responds better but it may be all in my head. Hey, if nothing else I can say I have one and besides those big fat red plug wires look cool when you pop the hood.[8D]