Wisher Performance AuxJection Kit | Whipple 3.0 GM Truck & SUV

Wisher Performance AuxJection for Whipple 3.0 GM Trucks and SUVs

AuxJection is a factory-ECU-integrated supplemental fuel-injection system for supported 5.3L and 6.2L GM truck/SUV applications using the Whipple 3.0 supercharger. It adds two port-style injectors without an external controller or piggyback.

Verified vehicle applications

• 2019-2026 Chevrolet Silverado 1500, 5.3L or 6.2L
• 2019-2026 GMC Sierra 1500, 5.3L or 6.2L
• 2021-2026 Chevrolet Tahoe and Suburban, 5.3L or 6.2L
• 2021-2026 GMC Yukon and Yukon XL, 5.3L or 6.2L
• 2021-2026 Cadillac Escalade, 6.2L

Fitment notes

• Whipple 3.0 supercharger required
• A stock 6.2L throttle body is the minimum size; compatible aftermarket 103mm throttle bodies may also be used
• The stock 5.3L throttle body is not compatible
• Adds approximately one inch behind the throttle body
• The supplied Whipple intake tube is verified with the added thickness; other aftermarket intake fitment is not guaranteed

Important requirements

• Choose the ECM architecture, engine, flex-fuel-sensor setup, and plate finish that match the vehicle.
• Custom Wisher ECU software is required; typical stated turnaround is 1-3 business days.
• The first flash must be performed as a “Write Entire.” ECU flashing hardware is not included.
• Do not use VP Import, Q16, or other MTBE-oxygenated fuels.