I have an 89' lx with a stock block 306, performer 5.0 heads, svo 1.7,1.6 rollers, long tubes,and full msd ignition with a elderbrock 5.0 intake. The problem is with the demon 750. I can tune the car to run great, idle just fine but can't get it to quit running rich. I have an Innovation digtal a/f gauge. 02 sensor is in the driver side on the pipe just behind the collector. Right now the a/r reads 15.2 to 15.5 at an idle. Hit the skinny pedal and it goes to high 9's. Cruising to and from work at 2600 rpm in fifth at 90mph it reads 10.2 to 10.5. My question is shouldn't it lean out when you stab it? and why would it run rich at part throttle? I have an old 650 elderbrock c series sitting in the garage. I've read my 750 might be to big but no idle or power issues. I was running 7.5 lbs of fuel but just turned it down to 6lbs. Just tired of my eyes burning, I know I need to build a scavenger kit for the pcv. I drive my car 94.4 miles a day. Lately I've been using an extra gallon of fuel a day. Just need to make her last a few months till I buy a bike. Thanks for any help.