PlatinumYukon
Member
Cheers all, I am new to this site and this is my first post. So I just received my new MIT kit yesterday for my 2012 Yukon 5.3L, I plan to continue using AC Delco high capacity filters. I was doing some reading into older forums and maybe im confused, but people seem to be having mpg losses after installing this and said "to correct this its necessary to get a tune so the computer can take advantage". Is it possible they didnt either disconnect the battery for an hr to reset the ECU or maybe they like the sound and response so much their foot getts a little deaper into the accelerator? I havent installed mine yet, I was waiting for the weekend. However I have no plans to do any other performance mods to this vehicle only some minor exterior upgrades. My whole purpose in purchasing this was to help my off the line throttle response and maybe see a tiny increase in mpg. Does anyone just have the M.I.T. kit with or without a different filter but without a tune? If so what are your results. Thanks in advance for responses. I am eager to get this thing on but will hold off incase i am going to return this to amazon.