CANBus Triple: Let the IMA-CAN hacking begin... - Page 2 - Honda CRZ Forum: Honda CR-Z Hybrid Car Forums
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post #11 of 25 (permalink) Old 03-19-2015, 02:21 AM
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Originally Posted by kaytwozero View Post
i like the idea of fixing the aftermarket final drive goof. how about something like allowing more usage of the battery than current limits allow such as a little more charge or drain, and how about getting a little more juice from the battery pack making sonething like the s+ more worthwhile?
Also possibly fixing the IMA cutoff at 7200 RPM...

Exciting stuff
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post #12 of 25 (permalink) Old 03-19-2015, 07:57 AM
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If someone actually knows how to read/code with this, I'd be more than willing to see if we can assemble a group fund to get them one of these to work on our cars.
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post #13 of 25 (permalink) Old 10-09-2015, 04:17 PM
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While looking for some tips for the OBD-II / CAN-Bus project I am working on I stumbled across THIS.

I had seen a previous iteration of this by the same person but that method was a bit too complicated / annoying to use. The "revamped" version in the link above is sooo much simpler... if you don't mind the DIY aspect for the hardware.
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post #14 of 25 (permalink) Old 11-23-2015, 09:12 AM
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Originally Posted by Quaestor Black View Post
Also possibly fixing the IMA cutoff at 7200 RPM...

Exciting stuff
I could be wrong, but I believe the RPM cutoff for the IMA is because of the relatively low power available. BLDC motor controllers use a type of field weakening to allow the motor to run above its base speed, you can think of this as trading amps for volts to increase the speed (though that isn't really what is happening). But because we don't have much of either, amps or volts, available we can't boost the speed very high, torque is decreased a little less than linearly above the base speed. I would hazard a guess that above ~7200RPM the engine will begin driving the motor as a generator even though full power is still being applied.

If the IMA were fooled into thinking that the current is lower than it actually is, we could get a little more out of it but not much. The NIMH cells are already being pushed pretty hard and the fuses may need to be swapped for higher rated ones.

"Never try to teach a pig to sing - it wastes your time and annoys the pig"
- Robert A. Heinlein
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post #15 of 25 (permalink) Old 03-03-2016, 08:47 PM
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this is awesome, any updates on this? specifically 2016 models???
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post #16 of 25 (permalink) Old 06-10-2016, 11:22 PM
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I too am curious about this. I'd like to hack the engine computer to engage auto-stop at about 40 mph, not 17. When I'm getting off the highway, the IMA is charged to 8 after using 6th and 5th gear to engine brake down to 55, and regen from 55-40.

Better yet, I'd like to engage auto-stop without the brakes, like ITEM9's paddle-shifter hack.
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post #17 of 25 (permalink) Old 07-09-2016, 05:21 PM
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One day I wanna know what all this means lol 🤔
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post #18 of 25 (permalink) Old 07-09-2016, 06:36 PM
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Pick up a book. This is all basic electronics.

2011 6MT EX nav
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post #19 of 25 (permalink) Old 07-09-2016, 07:04 PM
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Ive picked up several books and understand "basic electronics" so take it easy it's called joking maybe you've heard of it
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post #20 of 25 (permalink) Old 07-10-2016, 01:23 AM
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The CAN signals are numerous codes from various systems all utilizing a finite number of CAN wires, read: lots of codes, so the appropriate term of CAN-hacking is closer to computer programming than basic electronics. It's not multimeter testing, splicing, soldering, relays, fuses and so on, its reading, identifying, altering or creating code, not basic electronics.
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