But a few quick queries before I do

1) I've sorted the blowing from the exhaust which was the u-bolt over the manifold/down pipe, since then performance has been increased slightly, I feel I can accelerate faster & she pulls better up hills, would this make sense?
2) Since I've tightened the u-bolt, the knocking under the nearside has increased, Dad said it could be the exhaust & since I've tightened the bolt I've tightened the exhaust in the wrong position, so whenever the engine moves the exhaust does to, in turn making a knocking noise, & again, would this make sense?
Cheers
