It got around 97k on the clock and is all stock and untouched as far as i know. I do have a K&N filter, no muffler with echo tips. All the piping is either 2 1/2 or 2 /14. I believe its 2 1/2 until it splits, then its 2 1/4. I love the way it sounds. I had to put a muffler on it for inspection reasons. Made it quite as heck! It was a dynomax welded muffler striaght through design. I seemed to pick up a little more hp or low in torque though...is that normal? Also is my entire exhaust suppose to get hot...even the tips? I have noticed that my stainless steel tips have got some discolor on them for getting hot. How do i check to see if the cat is good? Does the stock cat only have one outlet? I have noticed that it uses a little oil now, but it doesnt smoke..could this be the intake plate thing? Also with that i have noticed that my hp seems a little lacking. When i stomp on the gas it wont downshift and take off...Any ideas on any of this...