Date registered: Feb 2010
Vehicle: 1972 280SEL daily driver. 904 Dark Blue with cognac interior. euro 4.5 engine
Location: Williamsburg, VA
Mentioned: 3 Post(s)
Quoted: 36 Post(s)
Megasquirt is in fact a DIY ECU and more. It can be used for Fuel delivery (sequential or batch) as well as spark (wasted spark, EDIS, COP etc). There is also an add on daughter board that can control up to an 8 speed electronically controlled transmission. But its downfall is it is totally DIY. You have to figure it out. You have to select components that you want to run. I will one day go Megasquirt on my 4.5. I would like to go wasted spark EDIS, eliminate the cold start valve, eliminate the idle screw and implement an electronic idle control valve. Sequential injection utilizing 19# or 24# injectors, and a wideband O2 sensor for feedback. Now I just have to convince my wife that this would be fun.
FYI, there are a few who have done this conversion and are getting 18-19mpg on the highway with their 4.5.