Resonator Delete

[MJ]

So I wanted to give my car a little more sound so I went with the resonator delete with stock exhaust.

I know the work was done properly because I went to a reputable exhaust shop.

There are times when I punch it that there is a knocking/clanging/rattle noise from the exhaust. All other times it sounds great. 

I really don't know why it makes that rattle noise.

As per my dash display, fuel economy has gone to crap. It reads 13L/100km. I wad consistently between 10L and 11L. I'm not sure why it's worse.

The car seems to have more power  which is an added bonus..