Geauxkart, I really understand, at about a 5% level, the acoustic charge bit with the rotary engine. I have some limitations as to what I can do and what I can't. I have to balance that with my goals for the car. What I can't do is replicate the factory intake system in a flatter package. I just don't have the skills. What I can do is a bit of design and fabrication but not any TIG welding. I too, have been told
You will lose HP if you shorten them
What I don't understand is the fact that the weber DCOE & ITM bodies routinely get more HP and they run on significantly shorter runner lengths. How do those two statements coexist? There must be other things that come into play. However, I am not trying to squeeze out every last HP from my engine. My first goal is to be able to sit in the seat, turn on the ignition, andfire up the engine. Having the MS will give me more fun in tuning it from there.
My design will have about the same intake volume as the factory setup. My thinking is that the acoustic charge MAY still occur at the same RPM as sound MAY reflect off the back wall of my plenum. The distance to do this is about the same as stock. I have yet to decide whether to use the stock throttle body or make a swap to a Mustang type 75mm body. The latter is smaller and easier to implement. If I can find a used one at a reasonable cost, then that is the direction I will go.
As for the Megasquirt, Santa was good to me so I am already into the building stage of my kit. I have been in the electronics field for many years and the building of the kit doesn't scare me. In reality, I wish that they made the SMT version (V3.4?) available as a kit. I can't wait to complete it and flash some lights! I still need a stim board but have decided on the JimStim over the std stim board.
There are several of us here building with the rotary engine. Each of us are going in slightly different directions as to intake and exhaust designs. It would be very interesting to see the results of these builds side by side.