This Sniper 2 EFI upgrade kit lets an existing Holley Sniper EFI owner move to the improved Sniper 2 platform without rewiring the vehicle. An adapter harness connects the new Sniper 2 throttle body directly to the existing Sniper EFI main harness, so the swap is a plug-and-play throttle body change followed by a fresh calibration wizard run. This polished kit includes the Bluetooth tuning module.
Key Features:
- Eliminates the need to rewire an existing Sniper EFI installation - a one-step, plug-and-play upgrade to a Sniper 2 throttle body
- Bluetooth module turns an iOS or Android smartphone into a tuning and monitoring interface, with a base map to get started and no laptop required
- Reuses the existing coolant temperature and wideband oxygen sensors from the original Sniper EFI installation
- Redesigned throttle shaft and plate geometry for a smoother throttle feel
- Next-generation ECU with improved RF noise and interference resistance for reliable operation on older vehicle wiring
- Onboard contactless magnetic TPS sensor for accurate, drift-free throttle position readings
- "Hidden Harness" wiring exits from the rear of the throttle body for a clean installation
- Cast-in fuel crossover from the primary to secondary fuel rail
- Integrated transmission kickdown provisions for GM TH350/400, 200-4R/700R4 and Ford C4/C6 applications
- Only four wiring connections required: Battery+, Battery-, Switched Ignition, and RPM
- Redesigned injector connector for improved long-term reliability
- Each throttle body is individually serialized for streamlined customer service and warranty support
Specifications:
- Flange Style: 4150
- CFM: 800
- Fuel Pressure: 58.5 PSI
- Fuel System: Not included
- Injector Size: 100 lb/hr @ 58.5 PSI
- Inlet/Outlet Size: 9/16-18 Female O-Ring (AN 6)
- MAP Sensor: 2 Bar
- Max Horsepower Rating: 650 naturally aspirated / 575 boosted
- Finish: Polished
- User Interface: Bluetooth Module
- Power Distribution Module: No
- Transmission Compatibility: All
- Part Number: 550-510-BAX
Nitrous control is not supported in Sniper 2 EFI software.
FAQ
Do I need to rewire my vehicle to install this upgrade?
No. The included adapter harness connects the new Sniper 2 throttle body to the existing Sniper EFI main harness, so it's a plug-and-play throttle body swap.
How do I tune the system after installing it?
Connect an iOS or Android smartphone via the Bluetooth module and run the calibration wizard - no laptop is required.
What's the maximum horsepower this kit supports?
Up to 650 hp naturally aspirated or 575 hp under boost with four 100 lb/hr injectors.
Does this kit include a fuel pressure regulator?
No, this version does not include an external fuel pressure regulator.
Is nitrous control supported?
No, nitrous control is not supported in Sniper 2 EFI software.