Holley Sniper EFI BBD for Jeep CJ
for 1971-1986 Jeep CJ's with 258ci 6 Cylinder Engines
1 customer review
Are you tired of struggling with the old BBD carburetor on your Jeep®? Does your off road rig leave you hanging at extreme angles while on the trail? The EFI team at Holley® has designed the perfect solution for your problems. Introducing the Sniper EFI BBD, for Jeep CJ's! The Sniper EFI BBD will be right at home on any 258ci powered trail rig, or weekend cruiser. Not only does the Sniper EFI BBD offer superior throttle response and WOT power over the carburetor, but you can also gain timing control! Put an end to cold start issues, hesitations, vapor lock, and flooding. Upgrade to Sniper EFI and get the tactical accuracy of EFI today!
Features: Bolt on BBD Carburetor Replacement Engineered specifically for 1971-1986 Jeep CJ’s with 258ci 6 Cylinder Engines Throttle body mounted ECU – no extra boxes to mount Supports up to 350HP with Two 100lb/hr Injectors Only 4 Wiring Connections Required! (Battery +, Battery - , Switched Ignition & RPM) Internal fuel pressure regulator eliminates the hassle of plumbing an external fuel pressure regulator (Preset to 58.5 PSI) Integrated ignition timing control High Resolution Full Color Touchscreen for Initial Setup, Tuning, and Gauge Displays Simple Calibration Wizard (answer a few questions about your engine and it creates the base map, then starts tuning on its own!) - NO laptop required! Self-tuning ECU means you don’t have to be a computer/tuning wiz to have EFI! The included Genuine Bosch LSU 4.9 Wideband Oxygen Sensor provides realtime Fuel Map Learn! OEM Style TPS/IAC and Fuel Pressure regulator, for years of dependable service. Included clamp-on oxygen sensor kit for 2.25" exhaust ensures a leak free oxygen sensor installation, with Stainless Steel T-Bolt clamps and a Stainless Steel (Weldable) oxygen sensor flange Specs
Brand Holley Sniper EFI Emission Code 3 Finish Shiny Fuel Pressure 58.5 PSI Injector Size 100 lb/hr @ 58.5 PSI Inlet / Outlet Size 9/16-18 Female O-Ring (AN 6) Product Type Sniper EFI BBD Part Number 550-858 Service Parts Emissions
This part is legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles and Racing Use Only Vehicles.
The following vehicles are considered Uncontrolled (Non-Emissions Controlled) Vehicles:
1965 and older U.S. manufactured California Certified vehicles 1967 and older U.S. manufactured Federally Certified vehicles 1967 and older Foreign manufactured vehicle
The following vehicles are considered Racing Use Only Vehicles:
Racing Use Only Vehicles are vehicles that are used exclusively for competition and that are not registered and that may never be used on the street
WARNING: It is against the law to install this part on an Emissions Controlled Vehicle
The following vehicles are considered Emissions Controlled Vehicles:
1966 and newer U.S. manufactured California Certified vehicles 1968 and newer U.S. manufactured Federally Certified vehicles 1968 and newer Foreign manufactured vehicle
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Great Product ... works on 86-90 YJ's too ... Good bye Carter Carb
By Joe L on September 23, 2018
I recently purchased an 88 YJ with the AMC 258. The Carter/BBD Carb caused all sorts of issues, most importantly, stalling every time the Jeep came to a stop. I knew I could rebuild the carb and restore better performance, but from what I understand the BBD never performed well, even when new. I'd been looking for an EFI solution and was thrilled when Holley introduced their Sniper EFI for the Jeep CJ. I believe I was their first customer for this great new product. I checked with them and confirmed it would also work on my 88 YJ. The install took a long weekend. It probably would have gone faster, but I was working with my son (it will be his Jeep), so we took our time.
The toughest thing was deconstructing the old vacuum system and figuring out what could be removed (most everything) and what remained (PCV, distributor advance, EGR Valve and cannister, and the line that goes controls the vacuum shift fork). I'd recommend getting some 3/8 and 3/16 vacuum hose as well. You'll need it to make the final connection to the Sniper. The leftovers from the original don't enable you to have a clean setup.
I also got the Holley fuel pump kit with 40' of hose. It was just what we needed. The only issue I had with it was that the fuel inlet to the Sniper is too close to the valve cover to use the straight fuel line connector that comes with the kit. I purchased two 90 degree connectors and that cleaned up the inlet and outlet routing considerably.
I made two minor mistakes during install that slowed us down. I picked a bad source of switched 12V, so the controller didn't activate initially. I started with the wire for the old vacuum switch that controlled the pulsed exhaust system - it dropped to 4V during start. I rewired using the switched 12V on the solenoid for the carb. That worked great. I also miswired the fuel pump ... didn't see the + and -.
Once those mistakes were fixed, it started right up. We've got about 30 miles on it and its running great. I haven't set up with a new distributor for ignition timing yet, but plan to do that in the future. I'm getting some engine knock, but hopefully will be able to address once I better understand the tuning and get the timing control added.
Thanks for a great product!!!
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Some parts are not legal for use in California or other states with similar regulations.