DIYEFI.org Forum

Innovate claims that the new "MTX-L PLUS" has improved heater control. Although, their description of it sounds a bit odd. I believe the regular MTX-L and LC-2 still have their regular heater control. So, "E8" may still be an issue. I think AEM was thinking that nobody would actu...

You also have the calibration resistor in parallel with the 62 ohm resistor. Right. That's about another 40ohm. I didn't think about that because the Innovate and AEM designs don't go through that pin. Still about 1v p-p. Maybe 1.2v Maybe you need the extra headspace for the amps ? Is their perform...

I don't understand why would you ever want to drive the pump harder than what is required to offset the current oxygen surplus/deficit ? Going from free-air to lambda 1.0 requires cutting the pump drive current to zero. Do you go negative ? Since the current is the actual measurement value. What is ...

All good stuff. So, you don't use a PID pump current. And you don't use a constant current PWM ( like Innovate and AEM ) ? Something in between ? This part, though... Based on my experiments and testing, an O2 sensor installed into the exhaust of a real engine gives at best a response time of 50ms t...

OK. Looks like I'll give the Spartan II a shot

I think I remember, during the alan-vs-delsolid wars, that they chose the most popular / most units in the field, when selecting the models for the test. So, it may have been intentional. But, for a different reason. I think the AFR500 V1 is the same as the NGK Powerdex ? Generally, any wideband tha...

It probably is a firmware thing. It's hard to imagine what physical thing would have those attributes. It LOOKS MAYBE like they are trying to filter out noise, creatively. When they get a clean transition, it looks good, and they just output it to the DAC. But, if they get noisy samples, they, maybe...

Here's what I mean about the output. 1st, it's pretty glitchy/noisy. So, its hard to get a clean trigger. These pics are several traces from the same repeated lean-to-stoich events. The best trace that I got looks pretty good. It was at about 25ms, overall. i.e. the big change happens about 25ms aft...

Finally got hold of the new Innovate MTX-L PLUS. A bit strange. The hardware is ALMOST identical to the regular MTX-L The only visible difference is that they added a proper DAC, to replace the old PWM DAC in the previous design. It's a bit weird, as they used a 2-channel DAC ( LTC1661C ). But, the ...

Looks like Innovate has released their "MTX-L PLUS" wideband. http://www.turnology.com/news/new-products/innovate-motorsports-releases-mtx-l-plus-gauge/ But, I don't see mention of it on their own website. Or, a place to order it. Not sure if all new MTX-L's are the "plus" model....