Suzuki Hayabusa 2022+ Development

[Dancycles]

Hi everyone,

I'm working on a project to flash and modify the ECU on my 2022 Suzuki Hayabusa over CAN bus, to run boost using a 3bar MAP sensor.

Here's what I've done so far:

Successfully dumped the firmware from the ECU.
Identified the microprocessor as a Renesas RH850/E1L R7F701201.
Currently in the process of reverse engineering the firmware.

I know this has been done for the Hayabusa Gen 2, and there's even a free software called ECU Editor for that purpose.
However, the people who created that software are not interested in developing it for the Gen 3.
I saw bubba2533 LS1 Boost OS and is pretty much what i want to do, my goal is to be able to run boost on the stock ECU and share all the information I discover for free with the community.

Looking forward to sharing my journey and learning from any insights the community has to offer.
I'm also interested in a mentor or teacher that i could pay hourly to help with my studies ( so far I'm just doing google search and ChatGPT )

Thanks in advance for your support!

[Dancycles]

Quick update, i found a guy selling a XDF file for the Hayabusa gen 3, so this will speed up the process a lot.

I'm attaching the XDF file, if anyone can help out to create the boosted maps i appreciate it

[VX L67 Getrag]

Sounds really interesting, hopefully someone with better knowledge can help!

[Tre-Cool]

Probably be cheaper in the long run to just wire in an aftermarket ecu?

does the stock ecu run a wideband?

[Dancycles]

My plan was to just run low boost, the stock ecu have a lot of functions like, wheelie control, cruise control, ABS and more, the only thing missing is more power, a low boost setup with stock fueling system and 6-7 psi is enough and you can keep all the oem features


I created this 3d printed adapter to use the second fuel injectors at the same angle of the oem, and you can use the Hayabusa gen 2 plenum on the gen 3, so is a easy and cheap way to turbo the gen 3, the only thing missing is the way to add fuel by manifold positive pressure, it would be a super easy and cheap way to turbo the motorcycle and it will still feel like a stock bike


I think the motorcycle comes with a narrowband sensor, I will check to make sure, but some ppl did change the narrowband for a wideband on the gen 2 Hayabusa for data logging

[VX L67 Getrag]

Still super interested, with most wideband kits like spartan 14.7 you can use wideband and simulate narrowband to feedback to stock ecu signal!

[Dancycles]

For the hayabusa Gen 2, they created a free software called Ecu Editor http://www.ecueditor.com/ source https://github.com/mkorkalo/BusaECUeditor
i attached 2 bin files, Stock ecu and Boost map on, is a M32R196
comparing the hex of both i can see where they created the custom maps


i also changed the values to 99 just to see exactly where is the data stored



So, in my head, i think i should go to each section that was changed from the Stock map to Boost map on, and see what was changed so i can replicate on the Gen3
but unfortunately, looking at Ghidra, i have no idea what is what... ( my fault for learning 3d modeling instead of coding...)

[VX L67 Getrag]

I can have a look at those when I get a chance & see if there’s not too many changes I can try & find the same section in newer file & copy across changes… I can’t code either but can edit raw files pretty well.

[VX L67 Getrag]

Is there an xdf made up for that gen2 ecu with the boost mod included?

[antus]

First things first, are the gen 2 and gen 3 the same cpu? similar os? similar hardware? I would assume that if the gen 2 team have no interest in gen 3 then there is a good chance not much of the above can be re-used, but please prove me wrong.