WHICH INTAKE OFFERS THE BEST AIR/FUEL DISTRIBUTION? HOW CAN A MOTOR GET HURT WITH A PERFECT TUNE? WILL MY MOTOR BE OKAY IF THE AF METER SAYS IT IS SAFE? HOW TO TUNE AN LS! CARBURETED AIR/FUEL DISTRIBUTION. SINGLE PLANE VS DUAL PLANE, WHICH INTAKE MAKES THE MOST POWER AND TORQUE? CHECK OUT THIS VIDEO WHERE I COMPARED A SINGLE-PLANE EDELBROCK VIC JR. TO A DUAL-PLANE, EDELBROCK PERFORMER RPM INTAKE FOR POWER AND AIR/FUEL DISTRIBUTION. BOTH INTAKES WERE RUN WITH 8 OXYGEN SENSORS, 1 IN EACH OF THE PRIMARY PIPES OF THE HEADERS TO MONITOR THE AF RATIO IN EACH CYLINDER. JUST BECAUSE THE AF METER IN YOUR EXHAUST SHOWS A SAFE MIXTURE (AN AVERAGE OF THE 4 CYLINDERS), DOESN'T MEAN THE MIXTURE IS SAFE IN EACH CYLINDER.