PumaNoob
New member
Its always confusing at first, but when you break it down, its actually not that bad, obviusly depending on your skill level, but im certainly no mechanic or auto electrician, but ive done a few, and mapped them myself. Its never going to be perfect because you cant put a specific amount of load on your engine and hold it there on a normal road, but you can get it in the right ball park. In my opinion, turbo cars are easier to map then NA, because if you look at the ignition map for a 2.0 turbo vauxhall engine, and a 2.0 turbo rover engine, and a 2.0 saab engine, there really isnt much difference, because you dont have such a big range of advance on ignition timing, because the EGT's (exhaust gas temp's) are so high, you have to keep it fairly retarded , except on full vac.
The megasquirt was developed specificly for the ford engines, and so uses the standard ford 36-1 trigger pattern, EDIS and coil pack, and engine sensors are all compatible. If you are going to attempt to fit it yourself, then id advise you sign up to the Extra EFI forums, you will get all the information and help you need there, from wiring instructions, trouble shooting, and mapping, to more advanced stuff like building the actual ECU yourself!
Depending on what car you are putting it on, then for simplicity, you can run the standard ECU for everything but the fuelling and ignitiion timing. Then with a megasquirt, or most other ECU's for that matter, all you need, is a MAP (manifold pressure) sensor, (they are built into the megasquirt), a crank position sensor signal, a permanent live, an ignition live, and a constant earth. Thats the basics of it, so you can wire the earth from anywhere on the chassis, & both lives directly from the fuse box, just make sure its after the fuse, so youve got it fused. Then just splice into the 2 wires from the crank position sensor. Thats all it needs to function!!! Then you wire in the EDIS module, off the top of my head, theres 2 wires that go to the edis module from the ECU to the EDIS, and then 3 from the EDIS to the coil pack. And thats your ignition set up! Then the injectors are batch fired, so you could get away with 1 fused live to all 4 injectors, a switched earth (via ECU) to bank 1 (cylinders 1 &4), and a switched earth (via ECU) to bank 2 (cylinders 2 & 3).
All in all, thats not a lot of work, and thats the very basic set up, you would then need to wire in water temp (to allow for automatic adjustment of fuelling when the car is hot or cold), and then throttle position and air temp are optional. You can let the standard ecu control the fans, and the idle control.
As i said, im no expert, im not a tuner, an auto electrician, or a mechanic, but ive done this before, and its worked out fine on my applications! I mapped my last car to 230bhp and its still running fine now, but that was just ignition timing i mapped. The fuelling is easier as long as you have a wideband lambda!
The megasquirt was developed specificly for the ford engines, and so uses the standard ford 36-1 trigger pattern, EDIS and coil pack, and engine sensors are all compatible. If you are going to attempt to fit it yourself, then id advise you sign up to the Extra EFI forums, you will get all the information and help you need there, from wiring instructions, trouble shooting, and mapping, to more advanced stuff like building the actual ECU yourself!
Depending on what car you are putting it on, then for simplicity, you can run the standard ECU for everything but the fuelling and ignitiion timing. Then with a megasquirt, or most other ECU's for that matter, all you need, is a MAP (manifold pressure) sensor, (they are built into the megasquirt), a crank position sensor signal, a permanent live, an ignition live, and a constant earth. Thats the basics of it, so you can wire the earth from anywhere on the chassis, & both lives directly from the fuse box, just make sure its after the fuse, so youve got it fused. Then just splice into the 2 wires from the crank position sensor. Thats all it needs to function!!! Then you wire in the EDIS module, off the top of my head, theres 2 wires that go to the edis module from the ECU to the EDIS, and then 3 from the EDIS to the coil pack. And thats your ignition set up! Then the injectors are batch fired, so you could get away with 1 fused live to all 4 injectors, a switched earth (via ECU) to bank 1 (cylinders 1 &4), and a switched earth (via ECU) to bank 2 (cylinders 2 & 3).
All in all, thats not a lot of work, and thats the very basic set up, you would then need to wire in water temp (to allow for automatic adjustment of fuelling when the car is hot or cold), and then throttle position and air temp are optional. You can let the standard ecu control the fans, and the idle control.
As i said, im no expert, im not a tuner, an auto electrician, or a mechanic, but ive done this before, and its worked out fine on my applications! I mapped my last car to 230bhp and its still running fine now, but that was just ignition timing i mapped. The fuelling is easier as long as you have a wideband lambda!
