[quote]
Originally posted by CKTA
[b]This is a very simple and effective mod. All you need is a stock replacement K&N filter (or similar cone style) and a trip to Home Depot.
1. K&N stock replacement filter
2. One Fernco coupler. I believe the size is 3-1/2 to 3-1/2"
3. Two worm clamps that fit over that Fernco
4. PVC pipe (3-1/2" O.D. pipe) I believe that is 3" PVC pipe
5. One ceiling pipe hanger, pipe size to fit over PVC pipe dia.
Start off by loose laying the filter on/against the pass. side inner fender.
Figure out how long of a piece of the PVC pipe you need and cut to length.
Mark and drill the IAT sensor hole and insert the rubber grommet from the stock airbox.
Install the Fernco on the MAF and then slip in the pipe, then the filter.
Install the pipe hanger over the exposed pipe and mount the hanger part (with the holes) behind the 2 heater hose bracket on the inner fender. Some enlarging of the holes in the hanger may be need to get the factory bracket to slide through, I only had to enlarge one.
Tighten everything up and enjoy better throttle responce, better milage and better upper RPM "pulls".
Hey great idea!....I would just like to know if this mod will work for a 99 5.7L Central Port Inj Yukon. Thanks