Like the title said just installed the Megan Racing V2 res test pipes on my 03 g35 coupe. I have stock exhaust. Well im sure i didnt tighten them down all the way cause i rushed to finish before work. But like the speed but hate the smell and noise. I think some of that will be the leaks i have cause shouldnt be able to smell car when doing 80 mph. I also havent put in the 02 sensors yet was having a hard time getting them out of the stock cats. Im hoping sound gets alittle better cause i have heard alot of videos and didnt sound the same.


Also wondering i have MR y-pipe also that has 3" exit going to the stock midpipe that i think is 2.5" would that cause some of the problems i am having.