I have a question. I'm slowly modifying a FJ Cruiser and like to do modifications here and there. I was wondering if it would be a good idea to add a snorkel even though it still needs alot before expedition worthy. Would this decrease my gas mileage as a daily driver? Should I wait till later? I'm trying to increase gas mileage and thought intake and exhaust would come first before lift, tires, gears, and other modifications that I know would decrease my mileage on my daily commute. Thanks