Well look at it this way. You have an O2 sensor in your exhaust sending mixture/temp readings back to your computer so it can make the required adjustments to fuel. If you have true duals are you going to put one in each pipe? If only in one pipe are you assured that 4 cylinders will cause the sensor to send an accurate message? 2 hooked together? If you leave the "Y" pipe on with it's single sensor then duals will affect nothing but the sound. My guess is just leave it alone. It's not a hot rod and nothing is any more annoying than a loud pick-up truck. I have to assume you are not in high school anymore?
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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