GFORCE1320

iTrader: (15)

I'm trying to dial in my TNT F1 on a 25o progressive (FJO) setup and it's really fat, during the run, the AFR gauge is bouncing around at about 9-1 and then it just goes off the charts to like 40+. I know its not right because for one, I didn't break anything and 2, the car didn't act any different and still pulled the same and the plugs looked pretty good too.
Could this be a grounding issue conflicting with my LC1 and FJO progessive?
It doesn't do it when it's not as fat, if it stays at 10-1 or better then it works right.
This has me baffled..

Zero4488

iTrader: (10)

What AFR gauge is it?

GFORCE1320

iTrader: (15)

It's an Innovate D16 with an LC1 wide band.

ShiznityZ28

iTrader: (11)

Why do you have it a 9-1? 10-1 is still to fat.

GFORCE1320

iTrader: (15)

That was the first 2-3 shake down runs. I don't plan on leaving it that fat.

ShiznityZ28

iTrader: (11)

A wide band does not read well bellow 9.0 OR ABOVE 18. mine will read 42 at idle on a open header car due to the reversion but just off idle it will read fine. i have an LC1 maybe 42 is when its out of range.

GFORCE1320

iTrader: (15)

Maybe that's the deal, when it gets below 9 then it goes haywire. That might be it because it won't do it when I start leaning it out, just when it's super fat.
I'll have to play around with the innovate software.

jetblast

ck. for exhaust leaks near the sensor. but raising the afr above 9 may just be the fix.

Zero4488

iTrader: (10)

I'd have to agree with that...maybe the gauge just doesn't know what do to below 9.0...