GDI, v8: Gen5 LS or go home

Post by **AndreyB** » Tue Jan 28, 2025 5:48 pm

Time to go LS. Being the most advanced open source ECU it has to be gen5 LS, right?

https://github.com/rusefi/rusefi/wiki/GM#e92

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Post by **AndreyB** » Tue Jan 28, 2025 5:58 pm

When working on these PnP having a patch cord helps a lot

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Post by **AndreyB** » Tue Jan 28, 2025 10:35 pm

Cam does not receive signal for first few seconds? Something is not right

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Post by **AndreyB** » Tue Jan 28, 2025 11:03 pm

Did not fire up today

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mpgmike · Post by **mpgmike** » Wed Jan 29, 2025 8:47 am

I'm guessing you're using a variant of the Proteus. I don't know what electronic component is used to drive the 5 volt logic signal for the LS coils, but the UAEFI uses a 3.3v-5.0v Logic Level Translator. I retrofitted LS coils on my Jeep inline 6 (4.6 stroker). It ran for less than an hour and the LLT burned out. I desoldered it and replaced it. Again the new one lasted less than an hour. Just a heads-up. Here is my thread: https://rusefi.com/forum/viewtopic.php?f=2&t=2804

Post by **AndreyB** » Fri Jan 31, 2025 10:10 pm

Pressure goes up and then it goes down? Weird

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Logs at https://github.com/rusefi/rusefi/issues/7375#issuecomment-2628483299

mpgmike · Post by **mpgmike** » Sat Feb 01, 2025 2:17 pm

Are you triggering the fuel pump or is there still a factory control in place? If you're not powering the fuel pump, then the factory system probably cannot see that the engine is cranking over and turning it off after the initial prime pulse.

Post by **AndreyB** » Sun Feb 02, 2025 4:26 am

mpgmike wrote: ↑
Sat Feb 01, 2025 2:17 pm
Are you triggering the fuel pump or is there still a factory control in place?

Yes, I can hear the low pressure pump working. Without proper CANbus I assume it over-delivers in some fail-safe mode.

Post by **AndreyB** » Mon Feb 03, 2025 1:35 am

Please wish me luck

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Post by **AndreyB** » Fri Feb 14, 2025 2:51 pm

We went too far on stm32s on this MVP, next revision should probably have much fewer of those.

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Post by **AndreyB** » Thu Mar 06, 2025 12:52 am

Today was spaghetti day. Tunes and logs including searching for HPFP angle at https://github.com/rusefi/gen5-data

Hopefully PnP tomorrow.

Post by **AndreyB** » Sat Mar 08, 2025 1:07 am

Bluepower · Post by **Bluepower** » Sun Mar 30, 2025 5:44 pm

AndreyB wrote: ↑
Sat Mar 08, 2025 1:07 am

That is really cool!
You should market the PnP ecu with the extension lead to the OEM connectors, I'm sure there are a lot of people wanting to buy it

jc10000rpm · Post by **jc10000rpm** » Wed Sep 17, 2025 4:41 pm

is there a version of this board available ?

Post by **AndreyB** » Wed Sep 17, 2025 5:03 pm

jc10000rpm wrote: ↑
Wed Sep 17, 2025 4:41 pm
is there a version of this board available ?

i have a few boards which are known to work to some extent, but overall this effort is on hold until a larger customer/partnership comes up. Will be presenting it at PRI

I would not recommend this board as your first rusEFI experience.

jc10000rpm · Post by **jc10000rpm** » Wed Sep 17, 2025 5:49 pm

Thanks for the update, looking forward to hearing more

rusefi.com

GDI, v8: Gen5 LS or go home

GDI, v8: Gen5 LS or go home

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Re: GDI, v8: Gen5 LS or go home