So I take it you are running a closed loop SD tune?

 

yeah i am, all you have to do, well i took my maf out, i turned the codes to not show the light but throw a code, and that was about it really that i can remember that i had to do. then there are some other little tables. i can send you my bin file before my cam and you can take a look at it if you want to

 

Would you please? I'm sending you a PM with my email addresses...

 

Oh, and here's a question about getting there from here:

When I did my first SD tuning session (open loop to get the VE table in line), I just set my MAF fail freq to 0. I started the car up, and started driving along, and never got an SES light. I did some other tweaks, but never got an SES light. I did verify that I got a P101 code (the only one I had)...so how would the car act if it didn't fall in to SD mode? I don't want to unplug my MAF...I guess I'm just wondering if I'm even in the right mode. I am getting a 12.96 commanded AFR at all times, and my VE table isn't too terribly far off when I do the AFR % Error Histogram...I'm just assuming that it was working as it should.

 

i had a 102 code on mine, did you turn it off so the ses light wouldnt come on?

 

Nope, all the codes were completely enabled like they came from the factory.

 

i would unplug the maf anyway i have seen a few cars not fall into SD mode after being set to 0

 

But how would it run? I guess I'm asking because my car ran great the way it was, but I have no idea if I was in SD mode. Does it NEED a P102 code, or will any combination of a 101,102, or 103 code work?

 

Oh, and I won't really be able to unplug my new MAF because the IAT is inside of it...so that isn't an option.

 

cant you plug your old iat in ?

 

Not with the lid I'm gonna be using

 

My commanded afr equals my actual afr if it is set to 14.63, when I set it to 13.0 the actual is off from the commanded.

 

ok got ya, im gonna try some things in my car and see what it does

 

I had noticed a problem last week that may be affecting your car as well. I followed everyone's suggestions for tuning by setting MAF Fail Freq to zero. I went through with my tune and checked everything using my LC-1 and it was gravy. Then, I tried to go back to stock settings with my new dialed-in VE / PE tables thinking the open loop scenario will command the richest AFR (ie - if OLFA says 1.13 and PE says 1.17, it will command the 1.17 EQ). My trims took a nose dive on me and I spent some time recalibrating the MAF, but it just didn't seem right. So, the second time around I completely unplugged the MAF and the wideband tuning caused my whole VE table shift upwards. I haven't gone back to closed loop operation just yet, but I can't help but think the PCM uses the information reported from the MAF even though the fail freq. is set to zero.

 

One correction in your statement. The pcm uses the richest values in PE mode between the two tables all other times it uses the OLFA table.

Unplug the maf sometimes it takes a while for it to fall over into SD mode. I would only plug it back up when i was getting ready to recal it.

 

TTT, Anything further on this? I'm seeing the same issue.

 

Can you explain in more detail what you are seeing?? Maybe take some screen shots.