It looks like to me you are getting too much squat which might be unloading the tires. I see by your sig you have LCA relo brackets. Are they adjustable(more than one hole)? Can you change your instant center? You might also try the BMR anti-roll bar... it made a huge difference on how my car launches.
What do you have under the front end? Stock? Springs? Struts? Sway bar? Looks like the rear is ok but the front is not.
Best thing you can do for racing is to switch the springs to the Eibach drag launch springs. The lowering springs on the market are notorious for pushing the car back up once they compress to a certain height.
I'll agree with that SD!
