i recently installed the LMS hurricane bundle plus spark plugs and a J&L oil separator. LMS gave me four tunes, 91 stage 3, 91 stage 4, 93 stage 4 and 93+x race. I run the 91 stage 3 tune for my daily driver and it will chirp the tires with traction control on. I can hardly wait for test and tune at the track to run the 93+x race to see what this thing will do. Of course i will run a few gallons of race gas in a third of a tank to get the power out. Loving my Livernois add ons! Oh yeah my gas mileage went from 21.5 to 22.7 per gallon with the LMS stuff. I do allot of highway driving.