I just had my Eibach sportline springs installed today and I hear a squeeking sound at the back of my car whenever I hit a bump, is this normal?
I also had my AEM undedrive alternator pulley installed today and I hear a grinding sound when I accelerate very slowly, is this normal or did the shop overtighten my belt?
well, if you had everything installed professionally then you can let them know about the noises. the belt may just need a spray to get rid of the noise or it could just need an adjustment. as for the springs, there may be some noise at times but i don't think you should have it all the time. i installed coilovers (of course, some differences) and get the occasional noise from the rears entering/exiting driveways but that's only at certain speeds. just have the install checked out to be sure everything was torqued to spec and done properly (e.g. no missing bump stops, bolts, etc...). good luck