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Lets put aside whether multiple carbs/TB will help low to mid range power issue .They have a few issues compared to single throttle plates .
1) mpg will generally go down, so will the rate of intake vacuum to throttle position (unless you find some really small TB body's ) which means not as good low end torque .
2) tuning up and keeping a nice smooth idle and good low end is compounded by the multiple TB plates , its very hard to keep them all in sync even with return springs for each TB linkage .I would say if OEM has an option then that may work better but if you have to make it all up you will probably have trouble here .
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