Header is on. Very easy install. Changes the sound a lot. Can't tell if I have a leak with it. When you get on it you can really hear it in the engine bay. It also comes with no heatshield and you can feel the heat coming off from it really good. So engine bay is probably hotter. But it seemed to pull harder, but that is all butt dyno so who knows. A lot of smoke came off of it when I first turned the car on. Even from the engine bay smoke was coming out. Guess it had to burn off the coating.

 

the smoke will stop.

 

It will burn off.

 

the leak sound you hear isnt a leak, thats just how it sounds since the header walls are thinner than stock

 

You did switch the donut gasket over didn't you?

 

j/k of course i did

 

didnt you get the megan header?