Honda 919. PC3? Or ECU flash? - Wrist Twisters
 
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post #1 of 8 Old 05-03-2018, 10:57 AM Thread Starter
Tirone
 
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Honda 919. PC3? Or ECU flash?

So I’ve been surfing through the 919 forums. I found that the PC3 seems to cause cold start problems. There are fixes out there. So my question is does anyone know any companies that do ecu flashes? my local Honda does not.

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post #2 of 8 Old 05-03-2018, 01:58 PM
just send it.
 
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PC3 cold start issue has been fixed... (link). I have not heard of anyone that does an ECU flash for a 919. From what I understand, Hondas are tough in general and the 919 isn't a wildly popular bike, so aftermarket support isn't what you would see on something like a CBR.



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post #3 of 8 Old 05-03-2018, 08:18 PM
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I want to know who the fuckin world would bother with creating a custom flash for a shitty Honda UJM budget build...?

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post #4 of 8 Old 05-03-2018, 08:26 PM Thread Starter
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I’m just going to buy the stock headers from Motorsport. Thinking about getting the danmoto gp slip-ons.

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post #5 of 8 Old 05-03-2018, 10:47 PM
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I wish someone would make a Raspberry Pi version of the PCIII. I've asked about it before on a different forum. IIRC, the modern credit card size computers will handle EFI, but I don't know if anyone's actually done it.

I really don't have the time to do this myself, but could use a custom computer on a few cars.

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post #6 of 8 Old 05-04-2018, 07:38 AM
just send it.
 
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I think EFI on a Pi is doable... maybe a little overkill from a hardware standpoint, but doable. EFI (especially on a 919) isn't terribly complicated, but it isn't trivial either. By the time you figure out a way to interface the sensors you need with your Pi, and add the cost of extra hardware (level shifters, voltage regulators, etc), you may as well just develop your own platform and include all of that in a single BOM.

There are aftermarket ECUs on mini bikes (Grom and Z125), so I'm a little surprised I haven't seen any on larger 'budget' bikes.



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post #7 of 8 Old 05-04-2018, 03:38 PM
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Quote:
Originally Posted by crakerjac View Post
I think EFI on a Pi is doable... maybe a little overkill from a hardware standpoint, but doable. EFI (especially on a 919) isn't terribly complicated, but it isn't trivial either. By the time you figure out a way to interface the sensors you need with your Pi, and add the cost of extra hardware (level shifters, voltage regulators, etc), you may as well just develop your own platform and include all of that in a single BOM.

There are aftermarket ECUs on mini bikes (Grom and Z125), so I'm a little surprised I haven't seen any on larger 'budget' bikes.
I asked about this before on a programming forum. I'm a long time programmer. IIRC, there are already kits for Pi or some have already done some open source work with this.

https://hackaday.com/2015/01/28/rasp...ustion-engine/



I wouldn't be too concerned about a Pi being overkill, they are dirt cheap. IIRC < $30. It would be nice to have a small display that could do a trouble shooting readout and on the fly changes.

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post #8 of 8 Old 05-05-2018, 09:30 AM Thread Starter
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I just decided to purchase the stock exhaust instead of PC3. Thanks for all the info!

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