well im quite sure honda's will enver use a MAF based metering system, so a leaky or vented BOV will not affect your A/F ratios when decelerating, idling or shifting.

See, i think the Oil pressure sending system also incorporates an Hobb's switch to trigger an idiot light when the oil pressure drops down too low. and i think that honda has designed their system to be pretty sensative so that if oil pressure drops down below the specified pressure @ 800-850 RPM idle speed, it triggers the light... so, if the spec is 10psi @ 800-850rpm and your idle dips down to 600 and then the oil pump rpm also dips down, its very likely that your oil pressure will also drop down LOWER than the 10psi at the factory set 800-850rpm... if it drops down low enough, that the oil pump output comes down low enough, it may set off that warning light...

if youare on the rich side of stoich at Idle, try leaning it out to a few ticks on the lean side, your idle should come up a little, and not bog down... if it stops bogging down, theres a good chance itll fix your oil light problem