[HUMMERcustoms.com/TAZ]

Screeper I think You are smart staying with the factory box. It was designed to keep water out of intake. Anyone that off roads much I feel would be protecting their engine by using the factory box with a better filter like You are using.

The Gran MAF if it is the bench set tuned to cold air intake may help throttle response some but, so will a vortex throttle body spacer that i ran and kept it even with SC on my H2. Most people think they are worthless but, they will improve throttle responce. So in that respect they both will do that. The spacer is just about $150 less than the regular pricing of the Gran MAF. Just based on my experience with a Gran since summer of 1999 i wish i had gone with the throttle body spacer on the 5.3L than the almost double the cost of Gran MAF. The price that the Gran is being offered at Moss I would give it more thought. Even if it just peps up the throttle response just a little it may be worth it for that price.