It's actually better to do it out in the open vs. a garage due to all the fumes. Remember to run your tank low!

 

If you need help with the install bro, i can help you out,a nd your more than welcome to come by my house. it doesnt take long at all. As for the vibration, are you torquing everything down to spec, or are you just pulling for dear life until u cant pull no more??? Might be your downpipe vibrating on the turbo, possible one of the turbo studs might have came lose, or a broken motor mount!