after ive been giving the valver some grief i get a loud knocking noise from under the car towards the back (i think) it happens mostly after iv changed gears and taking me foot of the clutch and in say fourth accelerating at low revs, ive got a magnex full system on (first thought eshaust knocking) and the back box is a tight fit in the back bumber where the holes been cut for it, but surely if it was the exhaust it would do it all the time but it doesnt. im a bit clueless so would appreciate some help
cheers lawson
cheers lawson
