my friend just picked up his Civic SI after getting some minor fender damage fixed (some lady changed lanes into him) and he had turned off the sub output on his head unit so his sub wouldnt be used. anyway, he got it back and the levels were all changed on his HU, the amps gain was turned WAY up, the sub was moved, there was a parking stub on his dash from somewhere he never went, AND he had a 1/4 tank of gas when he dropped it off and now its on E. YIKES!~