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WSI CNC Ported Throttle Body | Polaris Pro R
$279.00 – $824.00
**This modification requires a tune for proper control.**The WSI 68mm ported throttle body offers a 20% increase in area at the throttle plate, and overall an even larger increase as we have greatly modified and smoothed the airpath.As we are always looking for improvements, we noticed the throttle body seemed to be very restrictive. We 3D scanned the factory throttle body, digitized the OEM air path, went to work with MasterCam, found the largest possible diameter throttle plate that will fit, and went to work with our 5-Axis Centroid CNC to port the complex shape into the throttle body. It is much more than a simple bore, we focused on keeping an OEM like shape to control airflow past the throttle plate with throttle position to make sure that it will have an OEM like feel in all modes and conditions, while still having a huge increase in airflow, throttle response, and power.
~ WSI CNC Port Service
~ WSI 68mm Stainless Steel Throttle Plate
~ Stainless Steel Torq Hardware
Throttle Body Size:
~ Stock Throttle Body: 62mm
~ WSI CNC Ported Throttle Body: 68mm
Tune Upgrade:
~ For WSRD clients that purchase the Whalen’s Speed RTD with their bench flash will recieve the correct CNC Ported Throttle Body Tunes free of charge!
Smooth operation in Rock Mode, Sporty throttle feel in Sport Mode and all the beans in throttle feel in Race Mode.
WSRD’s testing came courtesy of their in-house Mainline Hub Dyno over the course of two days for validation purposes.
Day One Testing:
~ WSRD 93 Octane Tune – Stock Throttle Body: 220.4 Hub Horsepower
~ WSRD 93 Octane Tune – WSI CNC Ported Throttle Body: 231.9 Hub Horsepower
Day Two Testing:
~ WSRD 93 Octane Tune – Stock Throttle Body: 220.0 Hub Horsepower
~ WSRD 93 Octane Tune – WSI CNC Ported Throttle Body: 231.8 Hub Horsepower
Nearly 12HP for $279!
Please send your throttle body core to the following address:
Whalen’s Speed R&D
161 Commercial Avenue
Paw Paw, Michigan 49079
269.415.0040
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