I just installed my mrt catted h pipe yesterday and noticed theres a slightly wierd sound coming from the drivers side of the car. I made sure to use the gasket on the passenger side, and tightened the nuts onto the studs well. On to the sound. . . it sounds like an exhaust leak, but i dont think it is. since it has 2 high flow cats instead of 4 crap cats on the stock, could it just be reverberations within the h pipe? Any other suggestions?

I have noticed the same thing when i put my o/r h pipe on....there were no leaks but sounded like it. I decided it was just the better flowing air and what not....sound about the same with my ARH LTs and o/r pipe and again there are no leaks so i would say its nothing to worry about

alright, thanks. . thats about what i had figured too. just some chatted cause theres more pipe for it to move around in. i tightened everything, so it should be fine. no visible leaks or cracking on the manifolds. it sounds soo nice haha