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.

[Reed Granrt]

Originally Posted by art leong

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.

Art
I had the same problem on the Units having different pig tails so I made up plugs for each one to allow swapping. Got all thru Radio Shack. And in doing so I found a cheaper high volume O2 sensor and I use the same O2 on all units now.
reed

[Ed Wright]

I have had many vehicles through my shop with Inovate wide bands installed. I have never seen one correct. They are very popular with Internet kids. I don't know why. Maybe they are cheaper?

The one on my dyno always reads with AEM units, FAST units, the internal logger in FAST ECUs and BS3 ECUs. Showing 1. leaner with those is not uncommon. I would put that Inovate deal on Craigslist. When I dyno my engine on an engine dyno my FAST XFI wide band has always agreed with the dyno's 8 wide band system also after I get all eight cylinders in line.

Art, I don't think it's where your sensors are located. I would use the one in the collector as you have found to do. You are seeing what I have seen with the Inovate set up.

[art leong]

Originally Posted by Reed Granrt

Art
I had the same problem on the Units having different pig tails so I made up plugs for each one to allow swapping. Got all thru Radio Shack. And in doing so I found a cheaper high volume O2 sensor and I use the same O2 on all units now.
reed

I put The AFX in because I was told that the Innovate was slower to respond. And would be better for track tuning. I only used the innovate to be able to tune low rpms (idle).
I haven't recalibrated either one since I first put them in. I'm a little shy to calibrate them now because I have a number (13.4) that the car runs best on. That is what I shoot for in high gear going up the track.

[ss3011]

Also if you are running leaded gas, there could be response and accuracy issues depending on how long they have seen lead. Sometimes they can be "cleaned" if run with unleaded gas for awhile. My Olds Q4 used to need new sensors a few times per year.