Air Box Flapper??
- Thread starter Lumpy
- Start date
SierraFlyer
Registered
The flapper is controlled by a vaccuum servo to open and close as needed by the engine. the servo is controlled by the ECU. Suzuki found that by closing down the flap at lower RPM, they actually made more low end torque than if they left it open. LIKE WE HAVE A SHORTAGE OF LOW END TORQUE!??!!
At full throttle the flap is open but is still is in the way of incoming air. Some people have done a "Small" box mod by cutting out the flap and servo. It saves a pound or two and it helps make more power at full throttle by de-restricting the opening. I will probably do it next winter when the snow keeps me from riding.
The "large" box mod is where the stock filter is trashed for a flat K&N style filter over an even larger hole (where the flap was).
At full throttle the flap is open but is still is in the way of incoming air. Some people have done a "Small" box mod by cutting out the flap and servo. It saves a pound or two and it helps make more power at full throttle by de-restricting the opening. I will probably do it next winter when the snow keeps me from riding.
The "large" box mod is where the stock filter is trashed for a flat K&N style filter over an even larger hole (where the flap was).
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