I just got back form the LIVERNOIS motorsport shop in southeast michigan. i was going to get my car dyno'ed but they started to drive it on the dyno and the air to fuel is way lean. at 4400 rpm i was at 12.8. I have the cobalt addition stage 3 and their canned tune. I thought it would only be about 100$ for a tune but i was way off. So, after spending 215$ for hook fee and a bung to be welded in to the exhaust i learned that my car is lean. It was kind of a waste of money. I could buy HP tuners and do it my self but this is all the power i want to make from my balt. So spending all of that money would be a waste for a one time use.If anybody in the southeast michigan area wants to hook up hp tuners to my car and help just let me know who much money youll do it for and what i need to bring for us to do it. All your help is much appreciated, thank you.