DO CHEAP CARBS REALLY WORK? WHAT IS THE LIFE HACK, WORKAROUND FOR THE AFFORDABLE HOLLEY CARB? HOW DO YOU TUNE A HOLLEY CARB? WILL CARB TUNING IMPROVE POWER? CAN I RUN A 4160 HOLLEY CARB ON MY 302 FORD? IS THE CHEAP, UNIVERSAL HOLLEY 600 CFM 1850 A GOOD CARB? HOW TO ADJUST THE VACUUM SECONDARY OPENING. HOW TO REPLACE THE VACUUM SECONDARY SPRING. HOW TO ADD A JET PLATE TO THE SECONDARY METERING CIRCUIT. CHECK OUT THIS VIDEO WHERE I SHOW YOU WHAT HAPPENDED WHILE WE TUNED A 600-CFM, HOLLEY 4160 (1850) CARB THAT OFFERED VACUUM-OPERATED SECONDAIES AND NO ADJUSTABLE SECONDARY JETTING.