Ok tuning gurus...I will e-mail a HPtuners logfile if you care to look. I ran the truck 13.47 not too bad but should be way faster. This is probably because I was running all of 6.5 degrees timing by 3rd gear. The KR spiked when I launched, then declined but reappeared at every gear change. I really don't want to F up my 3rd engine (bad cat took out 1st bad build on 2nd). Any advice is appreciated, and I glanced at the wideband and it seemed to stay at 11.3 to 11.6 a little rich. I have to send my serial cable up so I can get MPVI pro and possibly a 2bar tune.

Here is a screenshot of my run. I am gonna throw up a shot of my VE table as well. Dang HPtuners just when I think I'm getting the hang of it, I can't seem to affect my VE table except for the worse. Could someone who has similar mods post up or e-mail me a copy of the VE table? I wanna make sure I'm headed in the right direction. Thanks

BTW I realize that the injectors are maxed out at shift point, however, I lowered the shift point to 5600...plus I plan on an injector upgrade in the future. I should be back in the 85-90% duty cycle anyway. Also my KR is from the start.Thanks!!

Dave

Click here for tables

Sorry but my Word docs were too large to upload here so I have the same topic on Silverado SS so I linked it above.

 

dave, email me your scan and tune, I'll post both up for you. Or just give you the links and you can post them on whatever forum you want. That should get you enough people helping you.

you mafless?

dewmanshu@deweygibson.com and truckvids@deweygibson.com

 

Looking at your screenshots on silveradoss.com, I would lean against VE, especially with your AFR as rich as it is. VE won't be an issue unless a) you're in SD mode or b) you're making rapid throttle transitions.
What are your IATs during those runs? Using good quality gas?

 

You've got mail!!

And no I am still running MAF and haven't gone SD yet. I have a wideband with the LM-1 but no MPVI interface for my HPtuners. I have to send my serial cable in but I have hesitated to send it out before I get my truck halfway right. I really want to make sure I am going the right way with my VE tuning...my trims aren't equal all of the time equal/unequal 30/70 . However, the closer I get the trims the closer to equal they get.

Dave

 

LOG FILE
www.deweygibson.com/1020racelog.hpl

ANOTHER LOG FILE
www.deweygibson.com/racelog210-20-06.hpl

TUNE
www.deweygibson.com/2006-10-20 Dave tune3.hpt

 

Thanks a lot!!!

Dave

 

Put a bit more emphasis on your MAF than VE. VE affects your fueling much less overall than MAF does...

 

I am starting to realize that...I wonder if I should go back to a stock VE table and scale the MAF? I have seen a spreadsheet for MAF tuning and I guess I'll have to do a bunch of research on the HP forum. I am still wanting to do 2 bar eventually but am undecided on whether I really need to. At this point I just want a safe tune so I can drive it (got transferred and have to drive my truck every day now) and I would like to go to the track or do a WOT run without blowing it up. The way my truck pulls from a takeoff I swear it would run mid 12's if I can get my issues resolved.

Dave

 

Check out in 1020racelog 2 frame 1388. Your are at 49MPH then at frame 1389 you are at 48 mph. I have never seen that before. Interesting. Shift too long maybe? hmm interesting.

man, raise that kr decay. kill that lingering kr. The very first kr could be attributed to being lean. Your nbo2's (not a reliable source) are slow to get to respective amounts.
like dc says, quick/rapid throttle transitions is when you see the ve table being referenced a little harder. And right off the line when you floor it, walk your pointer over the first few mph...upto 7mph. click on your histogram #5. as you run the mouse over your chart watch as which cells you go through to get to the ultimate destination of 105kpa and then full maf dependacy. Notice the o2's are looking real lean. You are transitioning a lean scenario. So, IMO...that carries on. You finally get into the maf calcs, lean. So the maf fixes everything and your fueling is fixed. But not soon enough for the quick burst of kr in the beginning. Now...remember those cells on the histogram #5. Now look at you ve table. Those very same cells are a dip in your table. Dips aren't good IMO. It could use some smoothing.

I am sure everybody else will chime in on this as well. And cover the rest of the kr. I am going to bed. RAISE that decay!

 

if you want email me your tune also
charlie_wheatley@hotmail.com