I will be using rusefi to control a bmw m62tu 4.4 v8. Aftermarket ecu is necessary due to the addition of a turbocharger, map sensor, and n75 electronic wastegate control. I am a software dev so access and contribution to source code is important to me.
The engine has electronic throttle and variable intake camshafts which will make this interesting. Will use the stock engine harness, and I already purchased the correct plug and 134 pin breakout, nice!
Tentative plan is to gut a stock ecu and turn it into a translator box using the breakout, and have the rusefi in an adjacent separate enclosure. This seems easiest to me, I am sure a board could be designed to use the 134 pin plug directly but I am a software guy not a hardware guy. Perhaps once I am further along I can do this.
BMW m62tu
- AndreyB
- Site Admin
- Posts: 14332
- Joined: Wed Aug 28, 2013 1:28 am
- Location: Jersey City
- Github Username: rusefillc
- Slack: Andrey B
Re: BMW m62tu
Welcome to the forum!
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
Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
- AndreyB
- Site Admin
- Posts: 14332
- Joined: Wed Aug 28, 2013 1:28 am
- Location: Jersey City
- Github Username: rusefillc
- Slack: Andrey B
Re: BMW m62tu
https://github.com/rusefi/rusefi/wiki/Hardware
You probably should not use two microRusEfi to run this. Your choice of hardware is older less visually appealing Frankenso which is available assembled today, or waiting for X number of week/months for a much nicer Proteus.
You probably should not use two microRusEfi to run this. Your choice of hardware is older less visually appealing Frankenso which is available assembled today, or waiting for X number of week/months for a much nicer Proteus.
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
Always looking for C/C++/Java/PHP developers! Please help us see https://rusefi.com/s/howtocontribute
-
- Posts: 3
- Joined: Fri Apr 10, 2020 8:26 am
- Location: Spokane, WA
Re: BMW m62tu
Proteus appears to be the best choice, with dual h bridge. That would leave only the ignition coils for me to figure out. Easy enough to switch to smart coils, but that would circumvent usage of oem harness.
Cleanest solution would be to design my own breakout with integrated BTS2140 igniters.
Cleanest solution would be to design my own breakout with integrated BTS2140 igniters.
-
- running engine in first post
- Posts: 1494
- Joined: Mon Jan 30, 2017 2:05 am
- Location: Seattle-ish
Re: BMW m62tu
Proteus 0.3 is about to get ordered - see its thread here if you're interested: https://rusefi.com/forum/viewtopic.php?p=36159#p36159alanmhayes wrote: ↑Tue Apr 14, 2020 5:37 amProteus appears to be the best choice, with dual h bridge. That would leave only the ignition coils for me to figure out. Easy enough to switch to smart coils, but that would circumvent usage of oem harness.
Cleanest solution would be to design my own breakout with integrated BTS2140 igniters.
Ignition coil wise, a few of us have wired up a handful of FGP3040G2 IGBTs for our coils, and that's seemed to work pretty well. You don't want to use a mosfet (like the bts2140), since they don't have active clamping and high voltage tolerance like an IGBT does. You could also use an off-the-shelf igniter module, or swap to smart coils, as you suggested.
-
- running engine in first post
- Posts: 1494
- Joined: Mon Jan 30, 2017 2:05 am
- Location: Seattle-ish
Re: BMW m62tu
What protocol does a BMW wastegate actuator speak?
-
- Posts: 3
- Joined: Fri Apr 10, 2020 8:26 am
- Location: Spokane, WA
Re: BMW m62tu
N75 is just a pwm boost controller, will use with dual 38mm external wastegates. I would prefer to directly control the wastegate, but the only aftermarket solution (turbosmart) for this is excessively expensive.
-
- running engine in first post
- Posts: 1494
- Joined: Mon Jan 30, 2017 2:05 am
- Location: Seattle-ish
Re: BMW m62tu
Ah - got it, that makes more sense. PWM is easy to control, so should be covered there.alanmhayes wrote: ↑Tue Apr 14, 2020 8:23 am
N75 is just a pwm boost controller, will use with dual 38mm external wastegates. I would prefer to directly control the wastegate, but the only aftermarket solution (turbosmart) for this is excessively expensive.
Re: BMW m62tu
Im about to do the same with a M62tu in a E39 535i, but only normally aspirated and my own design ECU.
Not having even started on the car,any idea whats not going to work once the factory ECU is removed or should i be piggy backing on to the standard system?
Not having even started on the car,any idea whats not going to work once the factory ECU is removed or should i be piggy backing on to the standard system?
-
- contributor
- Posts: 413
- Joined: Tue Jul 24, 2018 8:55 pm
- Github Username: Orchardperformance
- Slack: Orchardperformance
Re: BMW m62tu
I have had good success with BMW coils connected via the VW 1.8t ignition module.
Now keeping MRE in stock in the UK - https://www.FutureProofPerformance.com