Ive lowered my 16v by 40mm on standard shocks. When I acelerate hard in 1st of from really slow in 2nd I get a rubbing/ creaking noise, I think it is from the back. Doesnt happen at high speed, and it doesn't seem to matter how many people are in the car. When I push the car down when it is stationary to test suspension there is no noise. I'm stumped? Anyone any ideas?? Cheers