DIYEFI.org Forum

The 4.9 might solve alot of issues with the innovate design, the sensor temperature signal is much stronger on the 4.9 vs the 4.2. The temperature signal on a 4.2 is ~ 5v*80/10080, the temperature signal on the 4.9 is ~5v*300/10300, essentially the temperature signal on the 4.9 is 300/80=3.75 times ...

Yup same thread.

There are 2 problems with going richer than 10 AFR (0.68 Lambda). First issue is that the Bosch datasheet only specifics operation as rich as 0.68 lambda. The 2nd issue is that I have chosen to output 10-20 lambda on the linear output of my units, this is a pretty standard output which is compatible...

Whenever there is a O2 concentration difference between the sample chamber and the pump/nernst cell there will be a voltage generated. That is probably not the best wording, there are proper electro chemistry terms that eludes me. The oxygen sensor is more or less a symmetrical device. Look at the 3...

Hi Guys, It is time to whore myself on DYIEFI again. I just released Spartan Lambda Controller 2, which replaces my Spartan Lambda Controller. http://www.14point7.com/products/spartan-lambda-controller-2 The webpage will be updated soon, right now it is mostly a carbon copy of my Spartan1 webpage. C...

I see that PLX has bumped their version up to "GEN4". Looks like it's just a firmware change to support the LSU4.9 sensor. I guess I'll order one to check it out. To support the LSU 4.9 you need a firmware change and also you need to add a resistor, ~100k, between the feedback signal and ...

The curve is slightly different between the 2 documents for the rich side, for the lean side both curves look identical (within rounding error). I would go with the first document as it is closer to what I consider as a datasheet, the 2nd document is more akin to promotional literature. What I would...

Ok, I will take that unit, your current unit. I will just use the linear output.

you got pm

Hi,

Does the LCD work, all I need is to see the AFR/Lambda value when I benchmark it using lab gas.

Does the unit support/require free air calibration? If it does then I assume it is via a PC connection, so I would need the PC connection to work.

Does it still work from time to time, or is it pretty much dead?

Would you be interested in doing a swap for a SLC DIY2?