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               Originally Posted by 
              agreskap  
              Before i fitted the stage 1&2, the fuel ratio switch in the rapid bike modulator was set to +2 as the manual recomended with slipons.
              
 So my question is, do i need to adjust it upwards since it now gets more air?
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         The answer is almost definitely yes! You're engine will be pulling in a lot more air now, so more fuel will be required. The filters will have a much bigger effect on the air/fuel ratio than the pipes.