I've changed the whole axle assembly shaft....that includes the cv joints....i went macanic and they wont be able to acutally go under and look untill next tuesday...so that kinda sucks...i just noticed today that my car was making a hissing sound so i took appart the air box and looked at the airfilter...holly crap...it was soo dirty, after cleaning it i went for a spin and notice a noticable differance in accel.....NOTE TO ALL: CHECK YOUR AIR FILTER
