So I went to a shop to do a spring install because was to scared to do it my self. So as . I was watching them do the install I can't tell if they messed up or not and I am paranoid. So what is the worse case scenario for spring install to go wrong? And the shop went to did not torque the bolts but they did use impact guns should i be concerned?

 

Worst case: all your suspension arms fall off and springs shoot out, making you crash and die in a fiery inferno.




but that probably won't happen.

sounds like a quality shop doing the install (sarcasm). If they just impact all the nuts on, they are probably all over tightened and will be a ***** to get off someday. They probably didn't load the suspension when tightening everything down so your car could behave funny or your alignment could change over time.

But you'll be fine...lots of shops work this way and the car turns out fine. But it's the reason why I do all my own work. No one cares about your car more than you do.