I think its the 3550lb curb weight, thats 200lb more than a Mustang GT, why so heavy? Quoted from an article comparing the turbo4 vs the V6 stang:
Order the Hyundai Genesis Coupe (available by Spring of 2009) with the four-cylinder and you'll get an all-aluminum DOHC turbocharged 2.0L mill with continuously variable valve timing on both the intake and exhaust producing 212 horsepower (223 on premium fuel!) and 217 pound-feet of torque. For comparison's sake, that's two more horsies than the 210-horsepower Ford Mustang V6, though the Mustang does produce a lot more torque at 240 pound-feet. Unfortunately, being down two cylinders doesn't translate into a lower curb weight, as the 3,439-lb. Genesis Coupe is some 139 lbs. heavier than the 'Stang.

So 3450lbs for a 4 cyl genisis. For comparison my 90 AWD Eagle Talon is about 3130lbs (Ive read) Im estimating around 400 crank hp (what the flow rate of my 18G is estimated for @18psi) I ran my best time of 12.46 at 24psi on race gas. So Im prob around 375 or so crank and that genesis time seems about right.

Another factor is the driver of course Id bet a really good driver could get a couple 10ths or more out of my car. I am average at best usually bogging, spinning, or burning my poor clutch up trying to feel my car launch at the track, with the helmet (which I hate) and usually a loud *** v8 in the next lane preventing me from hearing what my car is doing its harder than it looks on tv.

 

Carbon wrap? Wow that is tacky, that is going to look like hell if its gets scratched or starts to peel off.

 

Wow. 3500lbs is pretty heavy. I was reading up on the latest car and driver super sedan shootout between the Merc, JAg, and Cadillac. They all ran about 500hp and did 1/4 mile in ~12.5. But those are some big porky cars!

 

Maybe it's because it's still on 8" wide wheels and it's all tire smoke the whole time, or because it's = wheight to a school bus full of kids and books and swine flu.