Pilot Odyssey Dual Intake Air Box Mods By hoser and others...
Pilot Prefilter Modification 

See how effective the pre filter is  


Wiggins Prefilter Mod

350 Airbox mod 

Pilot 4 Inch Intake 

PilotNut's Pre-filter mod and dual inlet mod  22 Aug 2006

Aftermarket Dual Inlet Airbox Lid Review finding more volume. 09 Jul 2006

Seen other air box mods send me the link Pilot400@mchsi.com