Hi Sub8,
well, till now no production in series is planned. This is a private handmade prototype and it's tested since about 18 month. It's developed concept and coding routines are done by myself with assistance of an engineer of electrical engineering regarding the electrical assembly.
Further questions regarding costs or purchasing in this state via PM.
The classic Retrofit is a superb solution and Im thinking of purchasing one as well.
But regarding this ECU concept the thought of a "pseudo mapped" injection with still a K-Jet is not possible.
The solution above till now is totally lambda based, means till now no further hall sensors, no further mapping sensors or whatever need to be installed.
For optimal plug'n play compatibility without any further electronical modifications I kept the original wiring and sensor signals. Means the existing throttle switches i.E.
The only further swap which is needed is the little 15c switch on the right chain housing which will be changed to a 120°c sensor, enclosed with the ECU unit.
So the old ECU unit will simply changed with this one where the LCD-display – if connected – can be put into the ash tray for realtime reports while driving. Adjustments via software will be done via USB.
The optimal mixture will still be achieved by the frequency valve which is driven by this ECU as before. But as here a CPU is handling the whole job, its possible to optimize many engine running states like a smooth idle, direct and optimal lambda 0.85 enrichment at acceleration or WOT and ... the support of Bosch LSU based wideband sensor controllers on the market like Innovate, PLX, AEM is given. With that it could also be possible to achieve specific mixtures for idling, cruising and accelerating/WOT. I think thats your point.
It will work with the original unheated o2 sensor, the heated o2 sensor from the 3.2 Carrara and as mentioned above with wideband sensors/controllers.
While developing and testing I and two other testing people with the same 930/16 engine figured out many interesting behaviors of the K-Jet of these US SCs.