I have lowered my car by 40mm and it has begun to make funny noises. My car is a mk3 2.0 gti 16v. It sounds as if it is the exhaust rubbing on something. It only makes the noise when either the car is accelerating and is made worse by having a heavily laden car. A mechanic friend thought it was the exhaust rubbing on something that was too close. Standard exhaust. Any help would be really appreciated!!