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Small carb is more sensitive to the motor for SI.
Terry Stapley The smaller carb is better if you are just under the limits. They sell a bottle of mixture that you add to a tank of fuel that will get you through emmissions test. Make sure you put a new set of sparkplugs in the motor, and change filters. The biggest thing if you go to a SI station is the waiting in line. You didn't say how big the cam is in your motor, Don't idle the car for a long time. I used to push mine through the line wait. Right before you are next start the motor and high ilde it at about 1,500 rpms to clean out the exhaust. You should go right through. Retard the timing 2-4 degrees on basic, this will help also if close to the limites. Rick L.
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