help!! o/r h-pipe problems

[Stang39r]

well i just installed my o/r h-pipe yesterday and i have fallen in love with the sound....BUT!!! but i have a handful of problems now. first off, i am at a total loss of power. ive lost it all. there is no torque and feels like no hp anymore. just gone.

second, there is an exhaust smell coming from my vents. is that normal or is there a leak in the connections?? could this be the problem thats causing a loss of power (lack of pressure??)

lastly, i think its supposed to be like this but is there supposed to be a kind of clicking from the headers/h-pipe connection?? the exhaust itself soundsa AWSOME but really only from behind. my buddy says it kinda sounds like a tractor on speed. just curious if this is normal or if it sounds like a leak. thanx a ton everyone