It does sound awesome though - I agree :happymugsI was bored today and took of the top part of the airbox and went for a ride.
truck sounds a little better and i figure I might gain a couple hp if im lucky, is this bad for the truck in any way?
I run mine with the top off all the time. I have a greenfilterusa.com replacement OEM style High Performance/Flow filter in the stock box with the Spartan tunes and even with the lid on I've never pulled the filter minder in, no codes, but here is a pic of how I run it most of the time.
Cool, I didn't get a chance to follow the rubber house that normally feeds into the airbox, I am guessing it runs to an area away from the engine compartment where it can draw the cooler air?