I just purchased a bellelectronics gtech type of performance computer that plugs into the cigarette lighter, i tried some readings in my friends honda civic and it seemed to me pretty accurate, so i decided to do the 1/4 mile run with the old ssei, it says it ran the 1/4 mile and 14.7@ 109 mph, i was pretty shocked so i did it again and came damn near close to 14.7 again? is that accurate for a 5000 pound car with a cai, smaller pulley, exhaust, tsat, ? and its the series 1 supercharged 3.8, anybody else run anything close to that?

I have pretty much the same mods as you and I ran a 14.8 @ 96. So it might be close on the 14.7 but it is way off on the 109 mph, Unless you made a typo!
I was using a gtech

your car only weighs about 3800 pounds.

The 109 is very off, but i found my car Gtech'd high in the trap speed as well compared to real life.

Weight could be between 2600-3800 depending on you, the wheels, stereo.