1997 Honda Prelude Runing very lean

My prelude is running very lean and i don't know what it could be any more. I have new O2 sensors, new map sensor, new cat, cleaned the egr and the intake manifold, new spark plugs, new park plug wires and did a compression test and they all good. I have a A/F gauge and it running almost all the way lean. When I drive it it struggles a little bit and the muffler makes a poping noise. I did the timing twice cause I was afraid it was off but it's good. I checked it with a timing light. I have no more idea what it is. The car start fine and everything is good but it's just way to lean to drive.