Having a bit of a confusing battle tuning a GTO with an LS2. Vehicle only has long tubes but the car sat for many years before being driven again. o2's have been swapped with new ones. Noticing the vehicle going lean and falling into OL - Not Ready. Visual inspection of the o2 wires lead to no fraying or shorting. Even with the stock tune with rear o2's and COT disabled, its doing the same thing.
You need a Wideband to tune wide open throttle. The O2 sensors shut off and do not produce a reading. As soon as you jam on the gas pedal (or let off real fast) it will go to open loop. Your STFT's are just a tad lean when driving around, but tomorrow, they may be a tad rich--in other words, the tune is close, but to be safe, get a wideband for WOT. Are you talking about the fuel system Channel that you are logging?
Your VE table is a bit rough, but not bad. You can smooth it out by clicking smooth selection twice.
Last edited by Lakegoat; 4 Weeks Ago at 08:08 PM.
2000 Camaro SS 2015 L83 port injected, Whipple 3.0, 4L80E, 8.8 Ford
2013 Silverado 5.3, 6L80k 8.8
We got an AEM Canbus wideband on it right now. Its pooling about 11.9 at WOT so its a bit fat.Originally Posted by Lakegoat
Yea I'm def going to go back in and do some smoothing once this is figured out. The issue I'm seeing the CFR change from 14.7 to 15.98 and its only doing that when the fuel system is going into OL - Not Ready.
screenshot.26-03-2024 13.34.44.png
(also, in HPTuners-world the E40 is a Gen 4 even though it's 24x and airflow based)
What version are you running? I'm unable to disable it via the latest beta.
What version of hptuners are you running?
Like 8 years ago or maybe more.. some 04-06ish cars and GTO's were one of them logged lamda instead of EQ even though it was labeled as such. So when you expected to see .87 it would read 1.13. That looks like what is going on in this log.
Hptuners fixed this.. and I mean its been forever ago.
As far as OL/CL your car is in CL. It will show OL in decel fuel cut off and in PE, wide open throttle.
Tuner at PCMofnc.com
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4.8.7 is the last one that had all the catalyst settings in it.
Thank you very much! Cat test disabled and car runs MINT.
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