The same reasons as everyone else on this forum, I like to tweak and I have got to the point where I can go no further without a standalone ECU I can tune myself.8InchesFlacid wrote:, why are you taking out that wonderful computer of theirs?
The OEM ECU is perfect for the original spec engine it is designed to last decades, start first time every time and be as dependable as any high quality electronic device ever can be. but that is not enough for me, I want more, maybe I'm just greedy!
I fully understand what total flexibility of a modular design can bring in terms of new interest and mass utilisation across many platfroms. what I am really concerned about is building in weak links.
For example my ECU's PCB is conformaly coated at some time during the design cycle they thought that there was the possibility of moisture collecting on the PCB this may cause early life failure. how would you go about ensuring any stacking connectors were just as protected?
As far as having FreeEMS in its stable incarnation as part of your daily driver, why not as long as some of the lessons learned by Automotive industry have been taken into account, there should be no reason why i can't walk out to the car at 7am every morning and expect it to do everything the OEM ECU did, and on the weekend or at track days it can go that little further.
Hell how long have carbs been around for?? what we are talking about is mixing fuel and air and firing the plugs at the right time.
For me the critical points I am considering when designing my Bosch replacement FreeEMS are:
The main connector has to be something suited to the task either Ampseal, MIL spec or OEM.
The engine harness should be suited to the grounding system employed on the ECU. or easily adaptable to become suitable.
The parts used should spec'd correctly i.e. Automotive grade. with nothing getting close to its maximum capability.
The board should be conformaly coated to prevent moisture ingress.
The Case should also be sealed to IP66 or better if its in the engine bay or IP64 in the cabin.
Leaded solder to be used if you want perfect solder joints likely to last 20 years.
Lots of LED indicators to assist debug.
As many critical systems on the main board as possible.