Is it easy to install a downpipe? I was checking out the downpipe thatis on cp-e.com soudns good and they claim 30hp 40 tq gains with the downpipe and catback exhaust. I am jsutcurious if it is possible to easily removethe downpipe fordealer visits......i dont have alift but my friend works at acura and he would help me install and remove if i needed to.....please help me ifyou have experience with partslike this