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Hi all, Some time ago a fellow member Lenny was in the process of making an aftermarket ECU which would be a bolt-in replacement for the standard ECU. It was a great idea and I was hoping it would be a success. Unfortunately Lenny was sided tracked and the project stalled. I like the retro EFI in the 280Z, but I would like to have something tunable and it’s getting harder to find good functioning parts for the 280Z. Now for so something I never thought I would do: Fit an aftermarket ECU. Now how to go about it. Which system should I use and should it be a complete swap or partial swap????? The choice soon came down to 3 systems. 1: The LinkECU G4+ Atom or the G4+ Storm. http://dealers.linkecu.com/atom 2: Spitronics Mercury 2. South African system for 2 up to 12 cylinders with lamba sensor. http://spitronicsuk.co.uk/category/install-guides 3: Perfect power XMS5B. German system for 4, 6 & 8 cylinders systems with lamba sensor. https://www.perfectpower.com/index.php/products/stand-alone/xms5a Megasquirt was not in my short list because I couldn’t find anyone locally with tuning experience. In the end I chose the Mercury 2 because a friend is using it in a Toyota and getting great results. The technical people at Spitronics are friendly and didn’t hesitate sending HEX files of different systems that would work on the L28. They had some files for a 280ZX and a L28 with EFI. You can also download a lot of stuff from their website. There are so many possibilities on the mercury(like the others) from single coil to coil on plug with wasted spark and injection pulsing twice per revolution to sequential injection. I would like to start simple with my single coil and running my Bosch low impedance injector in pairs on 3 drivers. I’m am now busy making the harness and brackets for mounting the ECU where the old unit was. To do list: 1. Assemble harness 2. Make bracket to mount ECU 3. Make adapter to fit Bosch TPS variable resistance sensor 4. Make bracket and fit MAP sensor 5. Remove AFM 6. Machine plug for Lamba and weld in exhaust pipe. 7. Remove all unused equipment. 8. Tune it enough to run and eventually dino tune. Need to drive it 45km to the dino shop with Spitronics experience. I don't have much time atm, but the car is now in for the winter, so that will give me some breathing space until March next year. I know it's a long first post. I'll post some photo's of what I have done soon Chas