Wide Bands??

[art leong]

Originally Posted by Reed Granrt

I have 3 different AFR systems. One is Innovate, one is AFX and one is out of Canada. The AFX has always read better than Innovate. I purchased a test canister to compare all. I open air calibrated all then test all 3. The Canadian read within .1 of the AFX. Innovate was off by .4. I have run all 3 on my dyno. I jetted by AFR number. The AFX and Canada unit did not vary. I finally read the plugs and I could see a difference with the innovate. Once I established a base line of plug reading and AFR reading, we always got in the ball park in a pull, then we looked at power. The Canadian unit can be read as Bluetooth. Luv the crap out of that. I recommend you open air calibrate each one side by side and see what readings you have. Then swap the O2 sensors from unit to unit and repeat air calibration and see what happens.
reed

The plugs are different but I can try to put the AFX in the number 4 pipe and compare them at an idle.
I haven't recalibrated either one in a while. I might try that first.