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How bout this? I already have an K&N stock replacement filter, so will i get the same effect if I cut a hole in the upper side of the filter housing so the filter still does it's job? This would be instead of cutting a hole in the front of the housing and adding an adapter with a cone filter.

Ok ok, search for the "deckplate mod".. i think gadget has it on his site www.gadgetonline.com as well as dyno graphs... check it out...

89 4Runner
3" BL, M/T locks, 33"bfg mt, bilstein, Kayline, tubebumper, toyotafiberglass panels
TBI: Elocker,3.4 w/ORS,b+b,S2Sstg2cams,arias pistons,P+P intake,TRDs/c,URDpullies+7th,downey headers,MAPECU2,WEGO WB, SupraMAF,walboro255,stg4clutch, EPaOo2 sim