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


If a turbo is used then you will have some type of intercooler arrangement which means IAT will be different then intake manifold temp. I routinely monitor the temp delta on my track car to give me a sense of when I am getting heat soaked on the intercooler.

Daniel Tyler

We measure the manifold air temp after the turbo on the TTC. This is a important  limiting factor. It must be kept
under 150 F. No matter the outside air temp. Other wise you risk pre ignition.

Paul Lamar


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