PVC valve is clogged
full exhaust and anything else to help air flow
add an air intake and full exhaust system if you havent yet done that
under the battery
As in all engines the air cleaner prevents dirt and debris from damaging the engine.
Just behind the glove box. Check a prelude forum or a repair manual for detailed instructions.
Assuming it's a carburated engine, the problem is a stuck needle and seat inside the carburetor. If everything else is ok, just remove the top of the carburetor and replace the needle and seat.
i have an 87 prelude si and mine will do 0-60 in about 4.5-5 seconds with a cold air intake.
On the Prelude there are 2 O2 Sensors. They are on the exhaust manifold on the front of the engine. You will need to remove part of the plastic air intake in order to reach them.
On/by the Throttle body, should read "sensor assy map"
check your idle air control unit also called an IAC motor
As in SRS airbag? I'm going to say with reasonable certainty no as my 91 had no airbag.
Remove your air cleaner housing, left front tire. unplug and unbolt your alternator and remove it up throw the air cleaner area.