Originally Posted by NinerBikes
Will also be interesting to see what the hourly fuel consumption is with this new Fi rig. Wondering what type of fuel pump and fuel pressures are needed with these fuel injectors?
While we haven't tested this new setup yet, our earlier Rotax EFI systems have shown a 4-18% reduction in fuel burn. The wide range there is dependent on leaning strategies, altitude and whether you have EFI only or EFI plus our EI. Many Rotax systems we supplied in the past still retained the factory fixed ignition timing which is a compromise just as on a Lycoming.
With the newer EM-5s, we also have the capability to individually trim fuel to each cylinder in flight for zero GAMI spread. This should eke out 1-2 more percent in savings.
We use a smaller version of the electric Walbro pumps we supply on Lycoming systems. Can use twin pumps if desired. Fuel pressure is generally set around 40 psi.
Price wise, I haven't received all the machining bills yet but we are hoping to keep the new kit price in line with the older kits using the fabricated intake manifold which chewed up a lot of hours making, fitting and welding.
You can see some of the other parts and older systems here: http://www.sdsefi.com/rotax.htm