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 - Madison's County - by Anthony West. Philip Madison has been a good friend of mine for quite some time. He has patiently suffered my incessant chit chat on the subject of tractors for longer than I care to remember, and on many occasions he has put himself out, dropped what ever it was he was doing, to come and lend a hand cranking handles, or loading a find onto a trailer. Although he himself has never actually owned or restored a tractor, he was always enthusiastic and always around helping with other peoples projects.
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