purchased a nisei 2 piece from a guy..ended up having a dent under one of the couplings. didnt see it until i was putting it on..how can i go about fixing that..safely?

its right at the end of the piping im hoping its not a lost cause. can i just bend it with my hand? i beleive its just alluminum

 

exhaust shops have pipe flaring equipment. You should be able to have them expand it back out.

 

^^ Yep or take a srew driver and use the rubber/plastic part of the handle and take a hammer and slowly and carefully get it back into place.

 

Blow through it from the good end!

 

Slip the coupler/clamp just past where its dented. Be careful with those T-bolts on aluminum piping