+1 for ECM AFM1000.
I used the NTK branded version of this box and I always considered it bulletproof. The only con I had on it was the price and the lack of a waterproof housing or connector.
Does anybody know the price of the unit now? That link didn't show a price. Is it cheaper now or is it still ~$1,500?
Somehow I missed the entire thread section where you were posting and a lot of really good information was dumped here. Happy to see the unique level of discourse here. I feel like I missed out in the mid-20 page range!
The AFM1000 is still the same price, we sell them if anyone is interested. They are a great product. You can get used ones but it hard to know how they've been taken care of. I hear there is this AFR500v2 thing that performs really well from ECM for a lot less than $1500 too
With the new analog on our AFR500v2, it is DRAMATICALLY faster than the AFR500/AFX was. Perhaps Delsolid is interested in taking a look. We also sell the AEM X-Series and can say in our testing that the AFR500v2 & AEM X-Series are the new benchmark in high speed, low noise Air fuel ratio measurement.
The AFR500v2 is unique in the market in that it handles the 4.2, 4.9, and NTK varieties except the ZFAS-U2 all very well. The display can now show lambda, gas, or methanol scale. This is also unique:
Gasoline AFR (9:1-16:1) = 9.00 + Vout x 1.400
Methanol AFR (4.00-7.10) = 4.00 + Vout x 0.62
Lambda (.618-1.098) = 0.618 + Vout x 0.096
Gasoline AFR (6:1-20:1) = 6.00 + Vout x 2.800
Methanol AFR (2.66-8.88) = 2.66 + Vout x 1.244
Lambda (.411-1.373) = 0.411 + Vout x 0.1923
We recommend the calibration grade NTK sensor for the wide range customers on the very low end of the spectrum such as turbo methanol customers.
We use HBX-1 style bungs and sell the US made stock before Innovate pushed production to Asia. They are great for our very high EGT, very high flow customers such as turbo methanol applications. Specifications aside, our real world experience is that the NTK sensors are much more temperature tolerant, tend to be longer lived, and are far more tolerant of various race fuels especially leaded fuels compared to the Bosch sensors. We ship the Bosch 4.9 sensor as a standard sensor now and spec up to the NTK sensor where it is warranted or desired.
The innovate clamp works reasonably well in many applications but we strongly recommend a bung installation instead wherever possible.