I've got a good question? what type plugs are you using? I posted an article a little while back and my truck ran like crap with the single electrode plugs,was told later i shold put the dual type in and man what a difference! My question is i was told you cant set the gap on the dual type plugs that they were already pre-gapped is this right or can you gap these plugs <img src="/forums/images/graemlins/cheers.gif" alt="" />