I am working on a new EFI system based partially I what I learned
using the TTC Motec system.

It will be super easy to wire and super fast to wire. Can be wired
 in minutes and not hours,. This is a MAJOR breakthrough for after
market EFI. Unlike all EFI systems on the market today.

There will be an EFIS built in with all the engine parameters and
manifold pressure. All data will be recorded like the Motec. It
will be stored on a 32 Gig Micro SD card. This card can be taken
out and read by any PC and most tablets and cell phones using
Android. Maybe Apple but I don't have one to test it on. Not
available on the Motec.

The screen on the instrument panel will be of your choice. All one
 needs is a VGA interface.

This is a list of the recorded and instrument panel displayed data
 so far.

Manifold pressure Oil pressure Oil temperature Water temperature.
Manifold air temperature. RPM Altitude. Handy for tuning. Air
speed O2 rotor 1 O2 rotor 2 EGT rotor 1 EGT rotor 2.

It will control stock RX8 ignition coils. This saves money as you
will probably have them. It will control stock RX8 yellow
injectors. Dido. It will use two a stock CAS. Dido for one.

It can handle two CAS as this is a critical part in all EFI
systems. If this goes out the engine stops. No if ands or buts. So
I have implemented two. One to control rotor 1 and one to control
rotor 2. If either one goes out notification is shown on the
cockpit screen and control reverts to the one good one  but but it
will then control both rotors just like the stock system.

More on this new EFI system later.

Paul Lamar

I can think of three other parameters that may be of interest:
Incoming air temperature Throttle position Timing relative to tdc
Also, how do you intend to detect an injector failure? I assume
you intend to incorporate the maximite in the design. Good stuff.

Daniel Tyler

I see no real use for ambient air temperature as it affects the
mixture. That is taken care of by manifold air temperature.
Manifold air temperature is essential.

Throttle position will affect manifold pressure but it might help
in initial tuning. Particularly in diagnostic mode.

Timing on a rotary, is 98% of the time, 22 degrees BTDC. Hardly
worth changing. Assuming you start out running with good injectors
the O2 will change if an injector fails.

I am doing my own PC board. Not using the Maximite.

Paul Lamar

Hi Paul, just a thought. would it be possible to design it as a modular system. Build one unit to operate one rotor and stack them together for additional rotors, maybe even double stack them as a backup system.

Thanks,

Mark Lewis

I consider it but it gets complicated when you have one set of sensors, one mass
storage device (the Micro SD card) and one display.

Paul Lamar

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