Alrighty, I just took the trac out for its first official run after the new plugs were put in. By the way, for those of you who haven't changed your plugs, it's MUCH easier to take the passenger's side tire off to change the plugs on the passenger side.
Anyway, 80 miles round-trip tonight, in 29 degree weather. The truck ran pretty good. Certainly better than it had recently, with my fouled plug. Running on all 6 cylinders is much nicer. hehe
I experienced no new problems, the truck runs nice at idle, part throttle and WOT. In fact, I was pretty pleasantly surprised when I floored it to pass a Dodge Ram, the truck took off quite well. Some of that was due to the new plugs, some to the nice cool air outside. I heard no detonation and no missing/backfiring. I am still hearing the "thud" at idle every once in a while, but not NEARLY as often as before. I am really lost about that noise.
On a more positive note, I drove the mustang GT tonight. It's damn fast, but I'm not sure it's quite as fast as I expected. I think the trac just might give it a run for its money up until about 70mph (the trac would lose, but it wouldn't be as far behind as I had thought). The mustang truly shines at highway speeds. Dumping it down into 3rd to pass someone makes for a VERY quick blast around a slowpoke.
Tomorrow...the GTO!
By the way, does anyone work at GM? If I go with the Ford, I can get an xplan from my brother's father in law (if he's in a good mood), but I really don't know many people who have worked or currently work at GM. Do they even HAVE a program like the x-plan?