Injectors aren't shutting off on decel???

Little background info...
01 Z06 w/procharger
2bar COS3 SD tune
innovative LC1 w/XD-16 gauge
96# injectors using an injector driver box (not sure while brand)

not sure why but when I lift off the gas and decel, like when coasting down a hill in gear, the wideband is still reading 12.5:1 (or whatever the A/F was when I was just driving). Shouldn't they (injectors) be shutting off and reading free air (20.9% o2) when you're off the gas in gear? every other car I've seen does this, why not the z06?

I've been able to get my innovative LC1 to read 20.9% a couple of times but its not at all consistant. Doesn't matter where in the RPM band I lift off, about 98% of the time it won't read free air.

Is there a setting in EFILive to shut the injectors off when 100% off the gas in decel? I think this might be part of the reason why my fuel ecomony sucks so bad, the car gets better gas mileage while crusing then it does coasting. :hihi:

i did search before posting (decel, free air) but came up with squat.
TIA for the help.

Sounds like your injector tables need some work.
There are countless discussions on injectors here and LS1TECH

You probalby just have your DFCO turned off.

Under Engine Calibration, Fuel, DFCO. Check out your enable/disable, and activate/deactivate parameters. They might be set so that you never get into DFCO mode. A lot of people turn it off for VE mapping, and they might have not turned it back on.