Went into the dealer were i purchased my 04 SE, TJ a year ago, to get the 30,000 mile survice done on it. I thought all i needed to get done, was the stuff my survice log had in it. Which was to check the tranny, transfer case, lube, hoses, air filter, oil change, plugs, fluids, and rotate the tires. But my survice log didnt say anything about an $89 induction system cleanse, thats suppost to clean all the carbon off the pistons, valves and fuel injecters. Im just wandering if anybodys ever had this done at the dealer, and if its made any difference in there (fuel milage or power). I guess all they do is hook the system up to a mechine and it take about a half an hour to clean the induction system out. I told them that i would be back in another time to get it done do to lack of funds at the time, but i have about 500 more miles before i hit the 30,000 mark.