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don't know if this mod has a correct name or remember who gave me the idea,think it may have been one of the sponsors
But not wanting an open hole for bugs,birds etc to get into breather so I done my intake behind the mesh part of grill and filterminder on AIS no longer draws down
bout 900 miles since I done it and still good
I was surprised but after about 900 mi and filter minder didn't move figured must be getting better air flow,then checked last fuel reciepts and sure enough less fuel
I did the zoodad mod with no problems usually the birds I hit accidentally take it the middle of grill and I would have pretty tough time getting through the holes I cut. As for the bugs living up here in the land of 10 billion bugs I actually have fewer bugs in filter than before, but I also removed the stock air box and put in a 6637 filter instead. But before the mods with my stock air box you wouldn’t believe the bugs I would find in there; bees, flies you name it they made it in to the filter.
I did this myself tonight, but put a wire mesh in behind to block the "small birds and other little animals that may end up in there" as Gene once put it!
Check my gallery for the pics if you like
the screen was to be my next install but couldn't find the one I wanted,guess I need to go down to the kitchen store and pick up a heavy culander and take it apart for the piece I need
Here's a summary of my findings comparing a regular Zoodad with my new Genedad. Getting rid of the grill strut increased my RAM air pressure by 50% which indicates that the strut was deflecting much of the flow to above and below the opening to my AIS inlet. I've made comparison measurements with the hole blocked with cardboard, a course mesh window screen, and a 1/4" mesh hardware cloth. Even the 1/4" mesh is enough to significantly reduce the air flow as measured with my differential pressure gauge. It seems that high speed air doesn't like to flow through anything but a wide open gap.
BTW, I found that the 1/4" mesh is much worse for bugs that just keeping the hole wide open. The mesh chops the large bugs into tiny pieces that go right up the air channels in the AIS element, and clog it up. Wide open, the bugs collect on the bottom, and it only takes a couple of minutes to pop the top, remove the element, and clean out the bugs.
I recently got caught in a heavy downpour on the interstate, and when I got back to the RV park I was surprised to find that the intake was only damp about 6" in from the front. I can reach my skinny arm all the way in so I can almost feel the filter element.
Originally Posted by ernesteugene
... for a 500 cfm air flow into the turbo inlet, I'm getting the following GPH of water flow into the engine, due to the ingestion of ambient water vapor in the air.
1) 0 GPH for dry air
2) 1.2 GPH of water flow at 500 cfm and 50 F at 50% relative humidity
3) 2.3 GPH of water flow at 500 cfm and 70 F at 50% relative humidity
4) 5.7 GPH of water flow at 500 cfm and 70 F at 100% relative humidity
5) 11.7 GPH of water flow at 500 cfm and 100 F at 100% relative humidity
My calculations show that several gal/hr flow through the filter on a humid day, but that AIS element seems to be very resistant to moisture. The details can be found here.
Gene, do you feel any differrence with the grill removed? Measurements are one thing, but do you actually feel a difference in power? Has fuel ecomnomy increased, or throttle response? I don't think I'd have it in me to do this mod unless I was stricktly running on the strip, but I am very curious to know. Thanks