90 Integra engine problem!!!!!

My Integra has a b16 1.8 L 4 cyl, dc headers, short ram K&N, Koyo Radiatior, Brand New Distributer cap and plugs. This 90 integra has an engine in it that has been completeley rebuilt and has 105,000 miles. I have maintained this engine very well for the past year since i bought it. When I bought it the hoses looked really bad so i replaced all of them to. I replaced the oil pan gasket because it was leaking. 2 days after replacing the oil pan gasket it burst out on one side and began leaking oil. My oil was low and i was cruisin for 3 or four hours. I was driving at about 45 mph and I went to give it gas the engine light came on and the car spuddered and died. I started it up on the fly and it started up fine. I pulled over and checked the engine over twice. When i turn on the car it starts but sounds funny, car idles fine, then while started the engine light comes on when you hit the gas. I think it could be either the timing or the oil pressure. I took it to a professional mechanic and he couldn't diagnose the problem. what the fuck can i do?????????????