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Message: <blockquote data-quote="JorgeS" data-source="post: 22951" data-attributes="member: 12094">Couple of questions:1- How did you tune it to run well with the TN cam?2- Did you notice a significant change in MPG?I'm thinking of installing the TN cam in my 2005 Yukon 4x4. Planning to keep the stock converter, upgrade exhaust, get a Airaid intake tube, and use an HP Tuner to tune it.I've already opened up the stock airbox for freer breathing and I plan to keep it. I cut a bunch of holes in the bottom of the airbox and the tray, connecting it to the fender, and sealed from the engine compartment with foam. Since this is my daily driver, and I plan on taking it on trips, including out West, I want the flexibility of being able to find a clean air filter anywhere in the country. From what I've read, with the mods I did to the airbox & tray, there would me minimal, or no, improvement with an aftermarket "cold air intake" system.</blockquote>