Strange wideband readings

[horizontalkev]

Just installed my innovate LC1 wideband gauge..

At idle everything seems okay around 14.5-14.7 but under boost around 5000 RPM the gauge goes blank and once I let off, it comes back with readings of around 12 (A little lean?)

And also after getting on it hard, immediately after my idle afr's seems erratic, jumps inbetween 13 and 15 all while my rpms are sitting uncomfortably at around 350 (normal RPMs are 700) this will last about 5 seconds and then return to normal. Normal?

 

[LarryJoe]

Is your car stock? The factory tune is like 9.5:1 under boost so it may be too rich for the wideband to read and that's why it will display a blank reading.

 

[horizontalkev]

No, far from stock.. 6 bolt swap, T28 turbo (13psi), aem intake and fuel rail, walboro 255 rewired with 8an lines, MAF-T blow thru, fmic and some other things. What afr limits does the wideband not work with?

 

[lil corb]

I believe innovate has the default settings of 8:1 to 22:1. It sounds like you have possible power issue. Any error codes showing up during the pull? Specifically E9? (Low voltage)

 

[horizontalkev]

Well I have a voltage monitor but I didn't pay any attention to it while driving.. And my engine light isn't on, yet. If I was running incredibly rich, I'd notice back firing right? And running lean to the point the wideband can't register would have made my egt's through the roof and possibly a blown motor, but the EGT's are normal and it still runs so I'm lost at what the problem could be..

 

[knochgoon24]

The lower the number, the richer it is running.

The LC-1 can read from approximately 7.4 to 22.5 AFR. The gauge shouldn't be going blank at any point. Connect the LC-1 to a laptop and see what it's outputting that way.

FWIW, I had to change the output to the gauge just a bit to get the readings to match up between the serial output and the output on the gauge. It's because of a slight ground offset.