That's a bit low based on your current VE table. I'll email you what I suggest, since that's much easier than pasting the data into here.

Justin

 

FWIW, have you considered leaning out your 100kPa column a bit and using PE to richen up once you get more fully into boost, around 120-125kPa or so. Seems to me that you'd likely end up with a better transition into boost and better drivability at part throttle in the 95kpa-110kPa area. Basing this recommendation on my experiences with running below 12:1 in that range vs leaning it out a bit.

 

I have tried that once, but for some reason, it kept "sticking" at the 12:1 I had set in the PE even when I let off the throttle. It would stay at 12:1 commanded till I shut the truck off. Didn't mess with it much though. Also, I'm at altitude, (4800') so I start getting into boost about 85kPa, so it kind of does that here any way.

Edit: The turbo, kind of likes the richer, higher egt condition there anyway, helps it spool a little qwicker

 

Gotcha. Just wanted to throw that out there in case you hadn't given it a try yet. Very strange on that 12:1 til it shut off.

 

Thanks fellas, im gettin closer now...

 

KB, i do not have a B3647, I have a B3605 (Commanded fuel when in open loop) and a B3648 (Commanded fuel when in open loop [ethenol]). Neither of which look like the table you posted. My tables have ECT on the Y axis and MAP on the X axis. Which table to I have to make sure is NOT 14.63 or 14.68?

 

Once you install the custom OS you will have those tables.

Take a look at the tune I sent you for your boost VE table, that's the same OS you'll be running.

 

okay, thats right....i keep forgeting i get a few extra tables with the COS3. Thanks Justin. I am going to go out and put the 2bar sensor in and get the PCM flashed and go from there. I will get back with you guys this evening. Wish me luck.

 

Yep you will have that table on COS3. It changes the Commanded fuel when in open loop to Commanded fuel vs RPM (normal). To me makes setting up your commanded A/F super easy!

 

okay, i seem to be on the right track. I got the 2bar installed, I had to pull off the intercooler core (mounted on my manifold) and got it scaled correctly. My kPa at atmosphere here is 102kPa. Final number in C6301 was 195.2. That brought the 2bar from 54kPa at atmosphere back to the 102kPa that the 1bar read. A few things i noticed:

1. B3647 and B3649 have to be the same or the AFR does not work out correctly. I had changed my B3647, but not the B3649 and it made my AFR read 12.56:1 even after warm up.

2. Tip-in seems to make the AFR go lean momentarily, is this going to be an issue if go WOT? I dont want it to spike lean when i punch it.

Also, whats a good scale for A0014? I noticed that when i pulled over to make adjustments and my IATs went up some, it threw my BENs off (lean), then they cooled back down after driving for a few minutes, and the AFR leveled back out. I think i am finding it would nice to have a dyno in my garage, its going to be tough to hit all the cells i need to hit out on the road with all the idiots and jack-asses that think i want to race because i am messing with the throttle. It got a little late and work traffic started so it was to tough for any more tuning so i called it quits for today. I will try some more tomorrow.

So let me ask a couple more things, i am following the tutorial for both AUTOVE tuning and SD. Is there anything that i need to make adjustments to when doing both at the same time? Truck is running fine with no issues so far so i assume everything is set up correctly. It actually feels smoother somehow, it might be my imagination because i was anticipating some first time problems but there were none really, so I am pretty happy so far. I think its just going to take some time tuning the VE then maybe switching back over to a partial SD tune with the MAF. So for autoVe tuning I have B3618 set to 14.63 (or 1.00) for the whole column, when AutoVE'ing the boost region, what will command my AFR once i go past the 100kPa limit that is used by B3647? Should i change B3818 to reference my AFR when tuning the boost areas?

I am looking forward to being able to dial in the boost regions better. I dipped into boost a little once, just to be sure the AFRs looked okay and they did, the MAP went to 116kPa and the Commanded AFR was 13.30:1 (reference from B3647) and actual AFR was 12.88:1. I am going to zip up a copy of my current SD tune with the first log i did to get some feedback and to make sure everything looks good before I continue tuning. Thanks for the help guys.

TUNE & LOG