power steering system removes about 17lbs, so it woulnt be very noticeable. heres some other suggestions and weights so you can decide what to remove:
entire A/C sysem: 46.5lbs
cruise control actuator: 3.5lbs
metal panel in glovebox door: 2lbs
hatch interior (except anything visible from inside the cabin): 9.5lbs
intake resonator (cut off from downward tube): 4lbs
spare tire, jack, tools: 29.5lbs
front tow hooks: 1lb
tar from trunk and some below passenger's seat: 7lbs
wiper fluid bottle + assembly (almost full): 5lbs
passenger's airbag: 8lbs
moonroof sliding cover: 1.5lbs
rear seatbelts: 5lbs
exhaust heatshields(all): 5lbs
driver's airbag and wiring: 3lbs
drivers kneeplates: 3lbs
front passenger's seat: 34.5lbs (leaving in, but just checked)
center armrest/ebrake cover: 3lbs (will find net after type R cover)
entire abs system (lines, wiring, etc): 28lbs
rear windshield wiper: 3lbs
odyssey pc680t: stock29lbs-odyssey14lbs: 15lbs net
97+ rear underseat bars: 18lbs (6lbs each)*info on the bottom of page 6*
intake manifold support bracket: 3lbs