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Mazda Renesis Crank Sensor firmware for Speeduino?

PostPosted:Wed Feb 06, 2019 11:09 pm
by Leadfoot
It looks like the current Speeduinofirmware supports the old 24 + 2 crank sensor setup on the 86 - 91 Mazda 13B but I don’t see anything for the 36 -2 - 2 CAS used on the later 2004 - 2012 RX-8 13B rotary. Just wondering if anyone had programmed a Speeduino for this engine before. This same crank sensor is used on some Suzuki 1600 engines like the Suzuki Sidekick.

If not, what is the procedure to introduce a new CAS Software decoder? Are there any guidelines on doing this? I have done this for other ECUs but I’m new to Speeduino.

Re: Mazda Renesis Crank Sensor firmware for Speeduino?

PostPosted:Thu Feb 07, 2019 6:02 am
by noisymime
Looks to be the same as the Subaru 36-2-2-2?
https://speeduino.com/wiki/index.php/Subaru_36-2-2-2

Image

The only difference might be the overall angle, but the pattern looks to be identical

Re: Mazda Renesis Crank Sensor firmware for Speeduino?

PostPosted:Mon Feb 18, 2019 3:04 am
by Leadfoot
Yes, that is the same as the RX-8 CAS. I don't see a reference to TDC on Cyl #1 on that drawing but I'm hoping that the Speeduino software can be configured for TDC reference point (?).

Thank you for the reply, I'll get a bit more familiar with the software and come back to this if I get stuck.

Re: Mazda Renesis Crank Sensor firmware for Speeduino?

PostPosted:Thu Apr 02, 2020 12:17 am
by rotorFR
I think I got this from one of the rx8 forums. Will this help implementation of the wheel decoder for this engine?

Also can speeduino drive the Renesis's 6 injectors and 4 ignition coils?

I know Sequential vs batch fueling/ignition depends on the # of timers vs # of injectors/ignition coils an engine has to run. Does having only 3 banks of 2 injectors each help with a potential sequential setup or am I understanding this all wrong?

Re: Mazda Renesis Crank Sensor firmware for Speeduino?

PostPosted:Thu Apr 02, 2020 9:12 pm
by lsdlsd88
I think the main challenge here will be controlling ignition timing split and dbw..

Re: Mazda Renesis Crank Sensor firmware for Speeduino?

PostPosted:Thu Jun 11, 2020 9:36 am
by Barbusix
Keep me posted. There is a need to controll OMP pump which add oil into combustion chamber. I have 3 engines in garage so I can take pics or measure if something needed. I will also try to run renesis with speeduino. Just waiting to come from ebay.