Hi Guys,
I’m planning to get rid of the original DME and install a stand alone programmable ecu.

What hardware do I need?

Want to update the MAP/MAF gate - do I also bin the speed sensor?

any guidance is very welcome

thanks

 

I can sell you my haltech ps1000 with wb1 and original o2 sensor if you want. All new, just been hanging around my workshop for years.

I will go drive by wire and will buy nexus s2.

700€ shipped.

 

Do LOTS of research ahead of time.
The project is not for the faint-hearted.
Good luck!

 

Thanks - that is indeed what this is supposed to be the start of-

any pointers much appreciated.

 

Have you read through this thread?
https://rennlist.com/forums/924-931-...our-944-a.html

Will give you a good understanding of what you are getting yourself into. The above thread is for Megasquirt but any other standalone (Haltech, Vitesse, Maxxecu, etc) will be a similar type of process.

Depending on what you decide, there may be some standalone with ready-made components that can be purchased separately to eliminate some of the complexity. For instance, a pre-made wiring harness, or a trigger wheel setup, etc to eliminate the need to make or fabricate your own. At the end of the day youll need to learn how to tune (required: wideband O2) at least to the point to get the car started and running. From there you can continue to tune yourself or look to take it to a dyno or have a remote tune done by a third party. So far I have been able to figure it out, but I still have some learning to setup intermediate/advanced things like closed loop idle, knock control, sequential fueling/ignition, coil on plug, etc.

DIY Autotune has some great guides to get you started with Megasquirt/Tuner Studio and some of that knowledge can apply to some of the other manufacturers too, since some of this is universal (but served up in a different UI depending on the system you use):
https://diyautotune.com/pages/how-to...mvGhYtQ9N9JWwQ

The beauty of standalone is you have the ability to tune every parameter of your engine, full access and visibility into every sensor on the car, which helps in troubleshooting, as well as leveraging additional power mods like removal of the AFM, and being able to utilize advanced capabilities not in existence back in the 80s (aforementioned coil on plug/elimination of ignition coil, sequential fuel/spark, etc), if you so wish. The downside is a steep learning curve and a requirement for independent problem solving, diagnosis and researching, which can be difficult and overwhelming for some people who dont have strong skills in those areas. As mentioned, there are lots of resources out there to support as you go through the process, but you will need to put in the time to find, read and understand it all.

You may also want to look at the F9Tech Sport DME computers as these gives you the same visibility of sensor outputs (as well as data logging) but doesnt allow (or require) you to setup and understand how to do a custom tune. Its basically a plug and play OBD2 version of the standard Porsche 944 DME computer.