yesterday when i drove my car around town it felt funny... when i was sitting in traffic i stalled a couple of times and was like wtf?... it never felt that way... so i looked at my tach and it was idling around 500-600 maybe... this have never happened... usually it'll idle around 900... it does go up to 900 then fall back down then sometimes go back up... now my car is stock... everything accept for an intake... just wondering what might be the problem... thanx

 

Vaccuum problem, usually the MAP sensor, but sometimes a cracked line or a line that has fallen off. MAP sensors are expensive.

 

i have the same problem... going to put my stock airbox back in and take it to acura to have it checked.