Breaking news March 7 2020!
As of this week we have working O2 control (closed-loop mode)!
Wideband input is now functional. The air/fuel ratio setpoint (lambda, actually) is configurable in Airtune. After startup and once the oxygen sensor warms to temperature, the ECU is now able to maintain the mixture at/around that designated setpoint value. It’s working, but needs a good deal of tightening up. Narrowband support will be following in the next few days.
I was originally planning on developing closed-loop operation well after launch, with only open-loop fueling methods supported starting out. But was convinced to go ahead and get it done now. Seeing it operating first-hand I feel that it’s well worth the effort. Watching the ECU run the engine all on its own with no human input… that’s something special. It’s like the first time realizing that your baby is growing up
Wideband review: I’m using the 14point7 Spartan 2 wideband kit, and very satisfied so far. I feel that it’s a great value at $125. Sensor included, but no external gauge because we have Airtune w/ gauge & graphing.
I love the product and the obvious amount of work Alan (developer and owner, I can relate) put into developing a well polished device at a low price point. I’m a fan of the inline design. Looks and feels like it’s just a cable. Easy to tuck away for a clean install.
My only disappointment is the shipping speed and my perception that Alan may have burned out a bit somewhere along the line (I understand that). The “fire” just seems to be missing. I don’t know, just my impression from a thousand miles away. In any case, I wish him and the company well and will surely buy more down the road as long as I don’t need one right away.
However, the next wideband kit I plan to try out (whenever it’s needed) is the Innovate #3877. It’s priced a dollar and some cents less than the Spartan 2 now. I’m particularly interested its “DirectDigital” response time claims. If you have some time to kill, you can read up on that here.
That’s the news for this week. Questions, comments? If you like these smaller/more frequent updates want to see more, be sure to hit the below and leave a comment with your thoughts!