Low cost DIY ecu for m52/s52 (obd2)

[Motheye99]

Can this the used on a M54 with a M50 intake and throttle body?
this is awesome

[pazi88]

do you think youll ever consider making an OBD1 version PCB for a "413" DME replacement? i know theres many people with OBD1 24v swaps that would be interested, myself included if I dont go through the process of swapping to OBD2

or do you already have these created?

Yes I have created those too. Works for many 88-pin Bosch ecus used by BMW. Like m40,m42,m43,m50tu,m50nv,m60:

https://www.ebay.co.uk/itm/183990914454

[pazi88]

Can this the used on a M54 with a M50 intake and throttle body?
this is awesome

Yes if you swap in m52 wiring harness. But as I did previously post, I have m54/m52tu version coming.

[Motheye99]

Yes if you swap in m52 wiring harness. But as I did previously post, I have m54/m52tu version coming.

I want the manual throttle body for ITB action, and ready made M52 swap harness are cheaper How hard is it to setup a tune for one of these? I'm new to this ECU.

[pazi88]

I want the manual throttle body for ITB action, and ready made M52 swap harness are cheaper How hard is it to setup a tune for one of these? I'm new to this ECU.

Same as megasquirt. It even uses TunerStudio same way as megasquirt. So if you/your tuner know to tune megasquirt, speeduino can be tuned too. I also have the base tune available for my pcb's so no need to figure out all the settings etc. needed to make it run.

[ForcedFirebird]

This is great!

I have a customer turbo m50 swapped e30 running on a stock DME where I just wrote a chip for, but would much rather SD tuning than MAF.

About how long does the assembly take? Do you have a link for a list of components needed in addition to your board?

[Motheye99]

So If i wan too run this on a M54 and use a M50 intake and obd2 M52 wiring conversion your current board should work? I really don't car for DISA or the E throttle because I'm going to get rid of it eventually.

[pazi88]

This is great!

I have a customer turbo m50 swapped e30 running on a stock DME where I just wrote a chip for, but would much rather SD tuning than MAF.

About how long does the assembly take? Do you have a link for a list of components needed in addition to your board?

It takes about 2 hours for me, but it all depends how experienced you are putting together electronics. All that you need is here: https://github.com/pazi88/Speeduino-M5x-PCBs

I will soon update BOM little bit for more reliable 60-2 trigger wheel reading, but it will be only few regular passives that will change.

[Sladek]

It takes about 2 hours for me, but it all depends how experienced you are putting together electronics. All that you need is here: https://github.com/pazi88/Speeduino-M5x-PCBs

I will soon update BOM little bit for more reliable 60-2 trigger wheel reading, but it will be only few regular passives that will change.

damn looks like the P7307-ND part on the OBD1 BOM is on backorder till mid-Feb. guess ill just have to wait unless your new trigger wheel reading replaces this part haha

[pazi88]

damn looks like the P7307-ND part on the OBD1 BOM is on backorder till mid-Feb. guess ill just have to wait unless your new trigger wheel reading replaces this part haha

There is tons of alternatives for that like, MOV-14D220K-ND, 495-6523-1-ND, 495-6522-1-ND etc.

[Sladek]

There is tons of alternatives for that like, MOV-14D220K-ND, 495-6523-1-ND, 495-6522-1-ND etc.

Oh nice! i dont know a whole lot about electrical components at this level so good to know there are alternates that can be used without damage

[Balleristic31]

Pazi, sent you a PM regarding an M42 ecu.

[Sladek]

There is tons of alternatives for that like, MOV-14D220K-ND, 495-6523-1-ND, 495-6522-1-ND etc.

Do you have any S52 base tunes?

[pazi88]

Do you have any S52 base tunes?

The m52 base tune works on s52 too. Just calculate the req. fuel to suit the engine.

The base tune is just to have correct settings and some kind of feasible maps to make the engine run and idle. From that it's easy to start tuning the engine or take it to dyno to be tuned by professionalwhich is the recommended way :D

[DesertBMW]

where to buy boards?