I've got my new Innovative AFR Gauge installed. I'm running it as a standalone gauge to monitor what's going on.

There seems to be a delay in the reading. As in I get into the throttle but the gauge doesn't seem to register the change. Then when I back out of it it seems like the gauge is a couple of seconds behind. Is that typical?

Also, I realize the AFR is changing constantly, but mine seems to jump all over the place. Even at a steady cruise it can jump from 13.9-15.1. Normal?

What are some common safe reference points? What's a typical reading at idle? cruise (no boost)? low boost? high boost? decel?

Thanks.

 

Idle and part throttle should jump around from 14.5-15.2. WOT should be 11.5 or less depending on where your tuner set it at. Low boost (not WOT) should be around 13.5-14.0.

 

+1, also it is normal for there to be a delay when changing from closed to open loop.

This can be (and should be on an f/i installation) tuned out via a couple of settings in the tune--the Open Loop Delay Max Time scalar (set to 0 seconds, OEM = 20, and the Open Loop Delay table (also set to 0 seconds, default = 1).

 

Guess I was hoping for a bit more instantaneous information. If I run it lean under boost I won't know it until 2 seconds after I back out of the throttle.

Under high boost, how long does a lean condition have to exist to cause real damage?

 

What does it settle in at at WOT? Also, you really need to get your tune changed to drop the open loop delays...

 

My gauge wasn't calibrated correctly and it was doing that. Try recalibrating it

 

hmm, my afr at idle is around 14.6 - 15.2 but sometimes when driving it will go up to 15.5 - 16. Should i be concerned? im running a kenne bell with an 11psi pulley but running a very conservative tune only making 370rwhp.

 

As long as you are at part throttle when you see 15.5-16 then you are fine and getting great gas mileage.

 

When I jump on my gas pedal my air fuel gauge changes right away and yes mine jumps around too at idle or easy running constantly. I also have an innovate gauge.

 

In closed loop mode (idle, light loads, and moderate acceleration) the AFR is constantly alternating between rich and lean as the PCM maintaines an average AFR of 14.64:1. Thats all it can do using feedback from the stock narrowband sensors (there are also a LOT of good reasons for doing it this way).

A wideband sensor will read those swings in closed loop mode. With the Innovate LC-1 you can program the response (reporting) rate to 1/12, 1/6, or 1/3 second. This does not change the sampling rate, however it will average the samples at the selected rate and dampen the readout.