I cleaned up my tune and I tested it at the track yesterday at the last open test/tune for the season. I figured it was now or wait until April.
The best for the day was a reaction of 0.139 (Sportsman tree), 60' of 1.864, 1/8 mile 8.185 @ 86.12 mph, and 1/4 mile in 12.66 @ 106.98.
The only mods are those I listed in my signature. I have the original factory (3 years old by now) dirty paper filter that I tapped out or vacuumed every year or so, and the original factory Badyear Eagle RS-A tires with over 23k miles on them that may or may not last this winter snow season.
Looking at the timeslips posted on Dragtimes, it seems the SHO's running from 12.4-12.5 all have cold air intakes, downpipes, cat-back exhaust, and tunes. The SHO's running 12-12.4 add WMI, and the ones faster than 12 seem to add bigger or upgraded turbos.
Is this accurate? If I spend the $2800-$3000 for downpipes, cat-back, and a CAI, I'll only look forward to 0.1 or 0.2 seconds faster in the 1/4?