Idk why but I am having the same result on 2 different qevs Ive swapped out for eachother on my karnivors ram. the qev leaking out the exaust hole is the front one. Idk wwhy this is happening. never had the problem before. Its leaking no matter if I put my never used qev on there or my old one. this is a very important matter cause Ill make a vid for all of you if I can get this to stop leakin!!!