ok i just got my car back on the road today and i took it to a local cruise night and it was running great, no problems at all. when i left there i went to my buddys house and romped on it throught first and second gear and the next time i looked at my oil pressure it was down to about 35 to 40 and when i was driving it was around 60. but before that it was at a little ove 50 at idle and a little over 75 when i was cruising around. what could cause this problem?? if it helps this is the first time ive driven the car more than just around the block since i put the supercharger on it and i've been trying to keep the rpms below 5300