ok i have everything off i'm outside its 1:45am and about to test if my cats clogged.. i'm gonna have to let it get to operating temp too and probably take it around the block.. will this damage the engine? i ask because i hear engines need backpressure and without they get damaged.. please reply fast thanks.

 

oh yeah and how loud is this gonna be... i'm i gonna wake up the whole neighbourhood?

 

it's gonna be pretty loud ... specially if you rev the car. i did that a few times ... opps!

 

Lol, I did that a few times too...the trick is to make sure you make it look like you've been done for hours so when the cops show up they just think it's some crazy person calling in...