Looking to maybe upgrade what I am using right now for my chassis dyno. I currently have 2 NGK AFX widebands that I purchased with the NTK sensors and they have given me great service and still free air calibrate and work perfectly. I am kind of a nut and have been tuning some high dollar/horsepower cars and I would like to get the utmost accuracy but also don't want to spend money if I am not going to see a difference in outputs. I was thinking of have 1 or 3 options and was wondering if anyone had any advice
1.) Send one or both of my NGK units to ECM for the voltage & stability upgrades (can someone chime in if you notice a difference) to convert them to what they call the AFM 1600L and either keep using the sensors I have or upgrade them to the calibration sensors (L2H2). I am not really sure if my NTK sensors are the LHA(production) or L1H1? They are both marked Japan NTK and have 0YL7 on the nut.
2.) Purchase an AFM1000 from ECM. These around around $1600 and come with the NGK lab grade sensor (~$500) They come in a few different configurations
Std. Version: 0.55 to 1.24 λ, 8.0 to 18.0 AFR (gasoline), 3.55 to 7.99 (methanol)
B Version: 0.41 to 1.37 λ, 6.0 to 20.0 AFR (gasoline), 2.66 to 8.88 (methanol)
C Version: 0.69 to 1.37 λ, 10.0 to 20.0 AFR (gasoline), 4.44 to 8.88 (methanol)
3.) Purchase something else I am missing?? New Bosch LSU 4.9 unit?