I've got an 03 Yukon with the 4.8 engine. I'm looking into getting the Volant Cold Air intake and then maybe a Flowmaster or a Borla exhaust. For those that has done these mods, did you notice an increase in your gas mileage or does it actually suck after the mods.
I can live with the noise these mods generate, but I'd hate to have a decrease in gas mileage. I usually do most of my Yukon driving on the freeway on the weekends.
What do you guys say?