VW Beetle w. Mid-mount VR6 engine

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tmbryhn
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VW Beetle w. Mid-mount VR6 engine

Post by tmbryhn »

A friend of mine is working on a cool build based on an old VW 1302 with some rather exotic solutions. He started out wth a GSXR engine, but has changed his mind and is now doing some pretty impressive "in-house engineering" to make the R32 engine+transmission fir the already heavily modified Beetle chassis.
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He'll be using one of my ECUs based on the Proteus firmware, and the purpose of this thread is to be able to discuss specific solutions and features that we'd like to implement in this project.
ECU build thread: https://rusefi.com/forum/viewtopic.php?f=2&t=1820&hilit=norway
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Some of the I/O and features we're planning on using so far:

OUT:
6x Spark
6x Fuel
1x Boost control
1x FP
1x (or 2x) VVT
1x Coolant fan
1x ETB

IN:
1x WBO2
2x Knock
2x VR (Crank+VSS)
1x (or 2x) Hall (cam)
1x Launch
2x Analog 0-5V (oil & fuel press)
2x PPS (DBW)
3x Analog Temp (CLT, IAT & Oil)

There'll probably be some more features and functions added along the way. One of the things that we'd like to have in time is some sort of CAN EGT input for individual cylinder fuel trimming and engine protection purposes. We've also discussed the possibility using an output for activating an air brake (Bugatti Veyron style). Mabe some brake pedal input+VSS logic could be implemented using the LUA script feature?
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AndreyB
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Re: VW Beetle w. Mid-mount VR6 engine

Post by AndreyB »

Wow, so clean and so nice overall!
tmbryhn wrote:
Fri Jan 28, 2022 1:46 pm
output for activating an air brake (Bugatti Veyron style). Mabe some brake pedal input+VSS logic could be implemented using the LUA script feature?
Yes I believe that should be possible with current Lua as is.
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
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AndreyB
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Re: VW Beetle w. Mid-mount VR6 engine

Post by AndreyB »

tmbryhn wrote:
Fri Jan 28, 2022 1:46 pm
There'll probably be some more features and functions added along the way. One of the things that we'd like to have in time is some sort of CAN EGT input for individual cylinder fuel trimming and engine protection purposes.
Hopefully I read it right and you are planning to contribute some code into the firmware? That's exciting!
Very limited telepathic abilities - please post logs & tunes where appropriate - http://rusefi.com/s/questions

Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
tmbryhn
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Joined: Wed Feb 12, 2020 2:40 am
Location: Norway

Re: VW Beetle w. Mid-mount VR6 engine

Post by tmbryhn »

AndreyB wrote:
Fri Jan 28, 2022 4:56 pm
Hopefully I read it right and you are planning to contribute some code into the firmware? That's exciting!
Not yet, unfortunately - still have a lot of ways to go to get into ChibiOS and C++ for STM32...

But I'm working on a new board revision, and thought I'd make the Aux SPI available (pins PF6 ... PF9) as a header for future EGT connection through a stand-off board. Searching the forum, I see that some other users have implemented the MAX31855 for use wit MRE.
There are still a lot of free pins on the Proteus 0.5 F4 design, eg PF0 ... PF3 and PF10 ... PF15.
Could some of these be used for SPI-CS purposes?
Simon@FutureProof
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Re: VW Beetle w. Mid-mount VR6 engine

Post by Simon@FutureProof »

Regarding EGT I started doing some work with compatibility for ECUmasters EGT2CAN module.

I managed to get a lot of the key bits in place but stalled when it came to live debugging. The live debugging on the STM was a step of complexity I was just not expecting and I haven't had a chance to pick it up again.

Happy to turn over everything that was done for someone else to debug and complete if it sees a workable EGT input in a sensible time scale.


Edit to add - It was this unit, we chose it as they are really cheap and actually quite a good system. 8 channels for ~€140, K type thermocouples. We are set up to run it on the drift car and I have a unit on my desk, just didn't get to completion yet.
https://www.ecumaster.com/products/egt-to-can/
Now keeping MRE in stock in the UK - https://www.FutureProofPerformance.com
mck1117
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Re: VW Beetle w. Mid-mount VR6 engine

Post by mck1117 »

tmbryhn wrote:
Wed Feb 09, 2022 2:13 pm
Could some of these be used for SPI-CS purposes?
There is no restriction on which pins can be SPI CS. They're used as ordinary GPIO, no special hardware requirement.
tmbryhn
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Location: Norway

Re: VW Beetle w. Mid-mount VR6 engine

Post by tmbryhn »

mck1117 wrote:
Wed Feb 09, 2022 6:40 pm
tmbryhn wrote:
Wed Feb 09, 2022 2:13 pm
Could some of these be used for SPI-CS purposes?
There is no restriction on which pins can be SPI CS. They're used as ordinary GPIO, no special hardware requirement.
How much work do you think it would be to get the EGT SPI feature w. MAX31855 currently used with MRE implemented in Proteus FW?
jorntangen
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Re: VW Beetle w. Mid-mount VR6 engine

Post by jorntangen »

Hi. Long time no updates. But now another car running on Rusefi by TMBryhn. Great work by all you guys !


1. Startup. Running sequential with vw quick start.

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