Speeduino PCB for Delco Replacement

Converting To Delco ECU From Carby Or Other Injection Systems
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Re: Speeduino PCB for Delco Replacement

Postby Tazzi » Mon Feb 22, 2021 3:22 pm

That is so fucking cool!!!!
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Re: Speeduino PCB for Delco Replacement

Postby VX L67 Getrag » Mon Feb 22, 2021 9:20 pm

Thats FRIGGEN AWESOME!!! I wish I had half as many skills as what you do!

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Re: Speeduino PCB for Delco Replacement

Postby Holden202T » Wed Feb 24, 2021 2:24 pm

Dazza92VP wrote:Nice def interested in that. I’d be keen to buy a unit and test it. What sort of loads can it drive on the flex outputs?

According to the datasheet for the driver (VNLD5090-E) it has a 13A drain current.

I do have 2 i think PCB's left....

currently i am happy that it works with the following notes:

1. crank trigger input went to the wrong pin, so it required a jumper wire on the bottom of the board to move it to the right pin, no real issue other than aesthetics.
2. the power LED stays on when its plugged into the car but the usb is not connected and the the ignition is off ... obviously this is not an issue for testing purposes, but may drain the battery if left in a car for long periods...
3. as previously stated flex sensor has not been tested, however it is the same circuit as on a previous speeduino board i made, so i don't see any reason it shouldn't.

So i guess its up to you, if you want to try one now knowing the above then i have no issues with that, if you are able to built it yourself i can post you a board pretty quick, however if you want me to do it, it might take a few weeks, i also dont have any spare 808 connectors, hense why mine has a VS V6 connector on it, it fits the same, just requires you to cut some of the locating tabs off your loom side plugs (easy to do if your happy to do it)

Also just for reference this is the pin out.

A1 - Fuel Pump Out
A2 - Empty
A3 - Boost Out
A4 - Cam Input +VE
A5 - Empty
A6 - Ignition Switched +12v
A7 - High Current Output 2
A8 - Empty
A9 - Empty
A10 - VSS
A11 - Ground
A12 - Empty

B1 - Not Connected (Battery +12v)
B2 - Empty
B3 - Ground
B4 - Cam Input -VE
B5 - Crank Input +VE
B6 - Clutch/2 Step Input
B7 - Tacho Output
B8 - Empty
B9 - Flex Fuel Input
B10 - Empty
B11 - Knock Input
B12 - Empty

C1 - Fan Output
C2 - Empty
C3 - Stepper Motor B1
C4 - Stepper Motor B2
C5 - Stepper Motor A1
C6 - Stepper Motor A2
C7 - High Current Output 1 (TCC Pin)
C8 - High Current Output 3
C9 - Empty
C10 - Coolant Sensor Signal
C11 - MAP Sensor Signal
C12 - MAT Sensor Signal
C13 - TPS Sensor Signal
C14 - Sensor Signal +5v
C15 - Empty
C16 - Battery +12v

D1 - Ground
D2 - Ground
D3 - Ground
D4 - Ignition EST Signal
D5 - Ignition Bypass Signal
D6 - Empty
D7 - O2 Sensor Input
D8 - Empty
D9 - Empty
D10 - Ground
D11 - Empty
D12 - Empty
D13 - Empty
D14 - Empty
D15 - Injector 2 Output
D16 - Injector 1 Output

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Re: Speeduino PCB for Delco Replacement

Postby jacomms » Thu Mar 25, 2021 8:39 am

Man thats really nice. I do like how it will just pop back into a 808 housing (with a little USB mod) and will take a knock board.

I did come across the Speeduino page a while back but had never seen this implantation on a AU car :-)

Have you done much more with it as yet?? Keen to see how it goes.


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Re: Speeduino PCB for Delco Replacement

Postby Holden202T » Thu Mar 25, 2021 9:20 am

not a lot, i have tweaked the tune for my car to try it (IAC and idle settings etc) but i am not in a position to start the car at the moment to test it any further .... and when i first ran it i didnt have the radiator or wideband in the car, so i do want to try again and confirm all that stuff is working and actually be able to make meaningful changes to the tune!

I have also had a few requests to get a board, so hopefully once they go out i can get some more feedback on testing from others.

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Re: Speeduino PCB for Delco Replacement

Postby The1 » Thu Mar 25, 2021 9:36 am

holy crap man thats insane work :thumbup: :thumbup: :thumbup:


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