which to run i wamt more power and running in very dusty conditions, was running the old style pretty good wheelies and power running 15/38 std trans gears, but its gettting clogged in minututes!!! i find they are easier to clean i have the new style on my big red.28 bid block revo works perfect but i use it onroad, never yet tried one on a 3.3 or in dirt, will it have more power run cooler ect? is it hard to clean because of dirt ending up inside the filter? and angain more performance?