2006 silverado built 5.3

[Silveradosaga]

please give me some pointers on this tune. it runs great under normal driving but it falls on its face at 3800 rpms to 4200rpms at wot for just a brief second then picks back up. it smells like its leaning out at wot. but smells really rich under normal driving. it feels like its holding back for what all is done to this motor and trans it should run stronger than it does. I am new at this.. truck tune tweek.hpt it has dart pro 1 heads 625/625 234/242 109 lsa cam 1.7 rockers. long tube headers 4l80e trans trans go shift kit and all of the best money can buy components, 3000 stall and 410 gear. 39lb injectors and low profile sheet metal intake.

[DougO]

need to see a logfile, are you using a wideband?

[Silveradosaga]

need to see a logfile, are you using a wideband?

no wide band but here is a few log files.drive rolling 1st wot to 100 6.hpldrive 4 with wot pull.hpl

[wodin67]

first i would check for knock.. copy paste low octane spark table to high octane table then take 5* out of low table ....
add knock retard and knock learn factor to channels if not there

[5FDP]

What's funny is that the low octane table has more timing, so it would just make the knock worse if there was some lol.

Also this thing is still in closed loop under wide open throttle, that is not right at all.

Set the MAP kpa to 85kpa for power enrichment, lower the enable torque to like 20% because you have completely disabled torque mngt.

The drivers side o2 sensor does something weird too, it's dead for part of the log them comes alive again.

I highly suggest you buy a wideband as well, there is no way to tell what your fueling is like without one.

[wodin67]

"What's funny is that the low octane table has more timing, so it would just make the knock worse if there was some lol."

Saw that ,the low table just looked smoother to me... he could use the hi..just make the low lower so that knock retard would be be active and in the scanner.
i may be wrong ...not a tooner just an old mechanic..lol

[Silveradosaga]

thanks for the feed back I am not a tuner just a old mechanic!! I bought hp tuners because I kept getting screwed over on my tunes I pay stupid amount of money to get it tuned and its never right. this is the tune that was put in it the last time I had it tuned the only thing I have changed so far was the pe table. it was at 1.22 I changed it to 1.19 to lean it out some because it was running so fat. I will research how to change the things yall have advised and I will repost. not sure about the o2 sensor I will put it up and check the o2 plug. I will also order a wide band.

[SultanHassanMasTuning]

as long as you have a wideband i would never tune these older PCM's on MAFtruck tune tweek Speed Density.hpt

[Silveradosaga]

ok im ordering a wide band this morning.

[Silveradosaga]

im running 93 octane and it has loud exhaust but it is spark knocking at idle. I never noticed it before today.

[wodin67]

Did you try the tune Sultan posted ,he cleaned it up nice for ya...

[Silveradosaga]

no I didn't know he did that... omg thank you

[Silveradosaga]

well that tune didn't work at all the truck wouldn't even run.

[wodin67]

Here's your MAF only tune with spark and pe changes and a channel config an layout to get ya started ...go easy on the wide open runs untell you get the wideband hooked up..
Hope this helps...
Not a tuner.. use at your own risk

[Silveradosaga]

I have been tweeking the maf this is what I did lastnight. I will do a comparison to yours tonight what do you think? im still having a issue with a lag around 3800 rpm to 4600 rpm tho. my wide band should be here today. im going to upload the tune and a data log of it with the maf I wrote.

[Silveradosaga]

123A.hpltruck tune tweek new.hpt any feedback would be appreciated I only made changes to the maf table.

[wodin67]

You need to get pe active asp..your running at Stoich=14.xx AF at full throttle (not good) should be at 12.5 ish..NB O2s should be full rich .889 ish..
also please post your channel config so i can see what your seeing..

[Silveradosaga]

Im at work now when i get home tonight i will get it for ya. Email me [email protected] wodin67

[Silveradosaga]

If i remember correctly the pe is set at 1.19 not sure why its not working. I thought 1.19 was around 12.8ish.

[wodin67]

Enable settings as 5FDP stated...