I'm hoping someone here has seen this before...

I set up my car in SD with HPTuners today and got a nasty surprise...In closed loop, my wideband shows about 14.7:1 as expected, but when I went open loop, the AFR shot to 16.0-16.5:1, even though commanded was still stoich. Even at 13:1 commanded AFR, my WB shows about 15:1. All my sensors seem to be reading normally, fuel pressure checks out, and I found no DTCs. This car is BONE STOCK, and as far as tuning, I have only changed things like CAGS, top speed limiter, and a small adjustment to PE. I have not done a single thing to the stock VE table yet. Stranger yet, when I ran the same SD tune a couple of months ago, reported AFR was somewhat close to commanded. What gives? Thanks in advance for any help.

 

someone will answer this i have seen a warning about closed loops. check the search thread if you have time.

 

pm RedHardSupra

 

^^Not a bad idea...my search was fruitless anyway.

 

post yer log

 

wow that was quick

 

Damn, I didn't log it-just watched it all go down on the scanner. Heh, I just sent you a PM before I read this. I'll see what I can do about logging it though.

 

Marcin's law, rule number one: log EVERYTHING
send me the tune at least, maybe it's just some obvious setting

 

lol i thought it was Murphy's

and i bet it is something simple

 

Tunes sent to you.

And dammit, you're right-I shoulda saved the log!

 

i think i found it, one of the tunes has wrong stoich AFR and it was set to never leave OL, the ECTs were set very high on the CL enable table, sent you screenshots through mail

 

Sorry, I should have explained myself better...One of the tunes (SD tune) is only for logging AFR error, so CL is purposely disabled. I should have told you that, huh?