I recently bought some Tein S-Tech springs and Skunk2 shocks then installed them with my friend without any problems. On the website it said it was going to be a 1.5" drop in the back and 1.8" in the front. It's all lowered, and the front of the car looks about right but the back is way lower, so it looks kinda weird. The front left is definitely about .5"-1" higher than the rear left, and the right side is just a little off balance. I do have two 10" subs and an amp in the back, would that be enough to push it down that far? Or is there something I might have done wrong installing them?

 

seems like u put the fronts in teh back and backs in the fronts, show a pic

 

My camera's broken but the ones I put in the front had the F and the rear ones had the R on them, I assumed that was what determined it?

 

S-Tech's are a relatively soft spring. It is possible your subs may be adding enough weight to make your ride height noticeably uneven front to rear. Take em out and see. As far as slight differences left to right, that is normal and to be expected, according to Tyson's research.