OT - Any SVT Lightning mechanics around?

[DanEC]

I have a 2003 Lightning with about 14k in miles that I take to cruise night once in awhile and pull a little trailer down to Lowes for building/garden stuff. It's got a 4 lb pulley, K&N CAI, colder plugs, a moderate street tune, and a cat-back exhaust. It lives a cushy life and has never given me any trouble but I noticed this morning on a run to Lowes that it was not quite right.

After I dropped the little trailer off I took it out and accelerated at about half throttle or a little less through first and second. It idles dead smooth and ran up through first smoothly, shifted and started out in second fine but after a few seconds it started a stuttering deal for lack of a better description. It's kind of like a miss but not quite - it doesn't fall completely on it's face just stutters until I back off the throttle. It's very repeatable - pretty much the same thing each time. I didn't press it any harder. No engine check light - I haven't hooked up a tester yet to look for codes.

From memory, these supercharged trucks are sensitive to having a clean fuel filter and I've never changed it out. Fuel sits in the truck for months and months sometime as I only put about 500 miles a year on it. I filled it up about a month ago. Does this sound like what might be expected from a partially clogged fuel filter? I'm thinking about changing out the fuel filter and running some injection cleaner through it and see what happens.

Any other low tech things I might try before going to visit my Ford dealer?

Thanks

Dan