I was looking for a EFI system that could be retrofitted to our sixes and came across these sites:
http://www.fordfuelinjection.com/
http://www.slantsix.org/articles/dibias ... ersion.htm
The first site is about retrofitting Ford systems, the second GM. The common theme is the use of a MAF (Mass Air Flow) instead of a MAP (Manifold Absolute Pressure) sensor.
MAFs are capable of telling the computer directly how much air the engine is using. To some extent this allows the computer to compensate for any modifications done to increase volumetric flow thru the motor (new cam, headers). MAF system would be easier in that, with the right sized system, no reprogramming would be necessary.
MAP systems, on the other hand, compute air flow indirectly. The MAP system has a bunch of fuel and ignition maps just like the MAF computer, but it calculates air flow based upon sensor inputs for RPM, throttle position, engine operating temperature, inlet air temperature, atmospheric pressure and most importantly manifold pressure (vacuum). This system is the most popular one sold in the aftermarket; Megasquirt being an example. The downside is that they need to be programmed, usually with a laptop, and if any performance changes are made, they would have to be reprogrammed.
I guess my question is, would the MAF system be better for the ones of us who don't want to mess with tweeking an EFI?
http://www.fordfuelinjection.com/
http://www.slantsix.org/articles/dibias ... ersion.htm
The first site is about retrofitting Ford systems, the second GM. The common theme is the use of a MAF (Mass Air Flow) instead of a MAP (Manifold Absolute Pressure) sensor.
MAFs are capable of telling the computer directly how much air the engine is using. To some extent this allows the computer to compensate for any modifications done to increase volumetric flow thru the motor (new cam, headers). MAF system would be easier in that, with the right sized system, no reprogramming would be necessary.
MAP systems, on the other hand, compute air flow indirectly. The MAP system has a bunch of fuel and ignition maps just like the MAF computer, but it calculates air flow based upon sensor inputs for RPM, throttle position, engine operating temperature, inlet air temperature, atmospheric pressure and most importantly manifold pressure (vacuum). This system is the most popular one sold in the aftermarket; Megasquirt being an example. The downside is that they need to be programmed, usually with a laptop, and if any performance changes are made, they would have to be reprogrammed.
I guess my question is, would the MAF system be better for the ones of us who don't want to mess with tweeking an EFI?