Hi friends
Very much a newby tuner but trying to learn, but I seem to have a problem - when running in CL, my wideband reads really lean at low RPMs.
Car is a 2014 VF commodore (holden), with the L77 6.0 motor running a 218/226/112+2 .600/.600 cam. 11:1 compression ratio.
Previously car was tuned by a well-known tuner a few times over the years and never had any problems.
I've recently added a wideband to get more into tuning and have noticed my car seems to run horribly lean in CL at low RPMS, probably up to around 1500 or so; but the worst by far is at idle where I get a EQ error (CL) of around 14-16%.
I am sure the wideband is good, I put it in place of my rear o2 in my other car and it reads as I expect it to, pretty much never deviating from 0.98-1.02 except for dfco.
It is in bank 2 of the exhaust at the moment, after the cats. I thought there may have been a leak at the bung, but I swapped the rear o2 with the wideband and no difference. Further, when in PE mode the wideband reads pretty much spot on my EQ commanded so I think it's working just fine. It's an AEM UEGO through the OBD port.
I know my VVE table needs a little work, but I dont trust the fuel trims at the moment. Does anyone have any suggestions that I should look into or wisdom for me?
I've attached a short log and the tune.AK VFv3.hpt24-02-05 14-13-05.hpl
Thanks in advance