ive asked 5 buddies about exhaust and got 5 diferent opinions about what makes the best power. "you need backpressure" "you dont need backpressure" "This sounds good" "that sounds bad".... whats right for my 79? I heard that the best muffler was no muffler so, Right now i have 4 feet or so of 2.25" pipe behind the stock downpipe, Dumping before the rearend. I liked it when i first got it because you can hella hear the turbo, the wastegate etc. But its loud when im not going fast (under 20 mph) It sounds like a boat. I like how the boost comes up faster, but it dosnt make as much boost at the top end. Will a glasspack cure my low end noise?, do i NEED a muffler?, If i go over the rearend will it be quiet? Please Help. I want to hear the turbo without all the racket.