Yeah dead right Tally, My Holley system is a HP multipoint, I purchased the basic kit with the manifold and 1050cfm throttle body. You need to order the injectors to suit the maximum estimated fuel flow I use 8x36 pound Bosch injectors. You can purchase extras and add duel O2 sensors. I am only running 1 O2 sensor but you can buy the same sensor at Repco as they are garden variety quality Bosch sensors and run one per bank. I purchased my new knock sensor from Bursons auto parts listed for a VR 5lt.(single wire) Also added a fuel pressure sensor to monitor pressure just to make sure at high rpm the pump was keeping up, and is great for when your looking back through the datalogger. The same pressure switch can be used on the oil pressure. I bought 2 new sensors on ebay for $40 delivered. Holley wanted $100 US each. The adjustability is so advanced that you can set individual cylinder fuel and timing. Great to know but without an engine dyno no use me mucking around with that part. But you can also use many other sensors and calibrate them in the program and put an offset figure in so the reading to the processing computer is 100 % correct.

The Holley Terminator uses the same computer and software as mine. The Terminator throttle body assembly looks very close to the old 4150 style carbys and you have to know what your looking for to tell its actually EFI. Most air filters will fit straight on top. If the filter assembly fits your old Holley carby it will also go straight on the EFI throttle body. I used the same air filter on mine. The Snipper system has the computer mounted inside the throttle body like the Fi-tech which reduces a few wires and connections but reduces some of the add on features as well and less adjustable parameters, I haven't used the Snipper system and for basic EFI system it will probably work well and still can control timing if needed. The Snipper throttle body assembly looks a bit like a UFO to me, and if you want the look of the old Holley carby sitting on top then the Terminator would be a better choice. And I like the fact that the HP system has so much future proof if you ever want to upgrade things later. For instance if you have the HP or terminator computer and you decide to change direction later you only need to buy or make your own harness and you can control a LS engine with fly by wire throttle and control the electronically controlled transmission even traction control. But the HP system is almost double the price so you have to decide what is important to you and what you want to have total control over.

You can go on the Holley website and down load the HP/Terminator software for free and play with it and see what you can do with it. This might help making your decision. This is what I did and got used to the program which turned out to be very easy to use for a first timer, which can suit every cars individual needs with total adjustability.

The photo below is one of the many screen you can choose to monitor the system in real time and you can set any parameter you want on any on of the screen gauges even while the engine is running. I opened this screen when I was installing the system to ensure I had every thing right before I installed the computer behind the dash. I haven't set up limit parameters yet but I intend on setting the warning system. You can set a warning limits to set a yellow light on the dash if something is getting higher or lower than normal, than a red light if a parameter passes your set maximum limits.

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You can order a small hand held controller with any Holley system and leave it connected in the car but now I am getting older and things are getting harder to read small screens I prefer to use my note book and the larger electronic dash as pictured.