I've tried searching other posts for a similar situation but haven't see any good answers.
2021 Camaro ZL1.
MPVI3 with Pro Link+, AEM Wideband 30-0300. Wired with the 5v white wire to red (prolink input 1). Brown to black (ground). Im getting readings back that look decent at idle. But at WOT the gauge looks good and steady but the readings within HP Tuners is sporadic/erratic. Jumping up and down +1/-1 & +2/-2.
Any insight or where I can look would be greatly appreciated.
can you post up a log so we can see what its doing, and be able to see your settins.,Originally Posted by pauljauch
Thanks, attached is the log.
paul jauch zl1 log6.hpl
just did a quick look
i didnt see anything crazy. It, the afr does move a bit, but thats pretty normal.
What i did see is 10. AFR being comanded and 14.12 or so while in cruise.
What fuel are you running? ZL1, thats supercharged correct?
ok thanks for your input. Ya ZL1 Supercharged LT4
this is 93 octane mixed with E85 to about 45% Ethanol.
What I see is the AFR for Bank1 squiggly line almost like interference. And then I don't have the Wideband graphed but if you slide the log you can see it not very accurate.
Maybe this is normal I guess.
Last edited by pauljauch; 2 Weeks Ago at 09:35 PM.
ill look more in the am
When using voltage signals for widebands into HPTuners, they are very sensitive to "noise". The ground and power wires need to be connected to a clean source and need to be shielded. So the best way to get power is to run shielded wires closest to the battery or tap into an already shielded circuit.
This is one of the main reasons we all love the AEM OBD2 wideband that feeds into the CAN BUS. It does away with any signal noise or voltage calibration.
The issue is also on my stock o2 sensors. Look at Bank1 AFR on the lowest graph in my latest log. paul jauch zl1 log7.hpl
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