Getting "this thing on a dyno" isn't going to solve everything. I would trust the pro's on here more than 99.9% of the "dyno tuners" out there. The only advantage of a dyno is for vehicles that are just to fast to tune on the street. If you don't want to tune it yourself, get one of the pro's on here to do it.
ok im gonna us this. im gonna tune from this point. do the ve first.Originally Posted by dhoagland
2003 gmc rcrb black.5.3, 4l80e.
I agree 100%.
But before doing that i would get a quality throttle body.
yes sir i just did that yester day, in saying this i do have a new tps, and a new iac im gonna tho in it, and then tune again. i think after this time ill put the new ve settings to the main tune
2003 gmc rcrb black.5.3, 4l80e.
ok, guys here is alog and the updated tune. be gentle.....lol
2003 gmc rcrb black.5.3, 4l80e.
i did my best with this
2003 gmc rcrb black.5.3, 4l80e.
It definitely looks like you are making progress, your error percentages are looking alot better, try it out, see if it did what you were expecting, with the changes you made.
Agreed...
I didn't see any knock either
2011 Camaro 2SS Convertible L99 Bone Stock for now
2003 Dodge 2500 5.9 Cummins QC 4x4. Airaid, 2nd Gen Intake, Grid Heater Delete, D-Tech 62/65/12, Magnaflow. Bully Dog: Propane Injection, Triple Dog W/Outlook Crazy Larry. Edge EZ, BD Flow-Max, 48RE: Sonnax Sure Cure/Transgo combination, Derale turbulator, billet input, Triple Disc, Super servo, 4 ring Accumulator. :beer
its in speed density
2003 gmc rcrb black.5.3, 4l80e.
i did put the ve to the main tune. not in speed density, blended. i will do a log in the am as i drive to work. its like 20 min drive to work, i always make sure im at op temp before i start logging.
2003 gmc rcrb black.5.3, 4l80e.
Did you run it in MAF only and calibrate the MAF? You need to do that before setting it back to blended
ok ill reset the\ ve in the maf tuning and do the maf... thanks for all the help.. you and the others saved my butt
2003 gmc rcrb black.5.3, 4l80e.
I haven't tried this and maybe slightly off topic, just some thoughts, might do some experimenting if i get time, but i have looked at some old logs and it looks like it should work, maybe it is something that is already done and i just haven't heard of it, unless i am missing something, assuming the VE is tuned and accurate, engine set to run in speed density, if you logged your dynamic air and plotted it against your MAF frequency, you should end up with a chart that can be directly copied into your MAF calibration table, and it should be very close. Everything i have seen over the years of tinkering with this stuff says to use fuel trims/wideband to calibrate the MAF, but it seems like this would be much faster, maybe even more accurate in less iterations, or at the least as a quick rough in to get a starting point. Or even calibrating the MAF first and using it as a baseline to generate a VE table as a starting point.
i went out and did one last run for the ve, what you guys think about this one. its very rich up top. im trying to knock it down. i guess this is what i need .
2003 gmc rcrb black.5.3, 4l80e.
As long as you don't encounter that weird scanner bug from a while back that screws with your readings while logging a failed MAF, I see no problem. I have logged dyn air to generate a starting point MAF curve while VE tuning several times. Some people have done the math on back generating a VE table from the MAF, but I have never seen the point. You would still have to hit the VE cells anyway, so I don't see that saving any time or effort.
i have a maf error channel. made with the math from the afr error. this is what i use to tune the error out of the maf right? here is a copy of the tune i just made in sp density, and the log i used . sorry fellows i know im getting on you guys nerves,
Last edited by mychevyisntheavy; 1 Week Ago at 09:27 PM.
2003 gmc rcrb black.5.3, 4l80e.
Disregard my comment to Twenglish. No need to confuse this thread with alternative ways of doing things when you are trying to learn the basics. As he said, it was "slightly off topic". Sorry about that.i have a maf error channel. made with the math from the afr error. this is what i use to tune the error out of the maf right? here is a copy of the tune i just made in sp density, and the log i used . sorry fellows i know im getting on you guys nerves,
will disregard. you guys are smart as heck , just hope i can learn from you guys. thanks again,,, man the truck is idling a lil funny in gear with my foot on the brake. it drops then cayches its self like every few secods, if i put it in park it goes away, but it is driving pretty dang good, still not did a wop. and i wont till i know i dont have any knock....
Last edited by mychevyisntheavy; 1 Week Ago at 07:42 AM.
2003 gmc rcrb black.5.3, 4l80e.
ok i mad my changes to the ve iv done like 6 logs and six changes to0 the ve, im moving to the maf now. i dont think ill ever get the ve prefect. i just dont know how. but it is starting good it is idling lil weird. dut not dying at all. ill log a few times in maf to tune up the maf. then i guess it will be ok to , then im gonna get my new heads and the new injectors, and a dyno tune,, this thing is bear to do. thanks guys
2003 gmc rcrb black.5.3, 4l80e.
i think i got it. i think i got the ve to a point of mybe one more tune. then the maf. then this thing will be tuned. whjat you guys think i took the ve started in the middle like started with 400rpm .5%-4400rpm to the top added 9.5%,then 4800rpm add 10% from 105kpa tp the top, then from like 5200rpm to the top add 9.5%-6400rpm from 105 to the top with.5% reshaped the ve . it looked really good, i loaded in and did a log, man it loved it. green everywhere expected for like two to three spots. so ilogged and tuned here is the tune after me up loading the log on to the newer ve i think i got it
2003 gmc rcrb black.5.3, 4l80e.
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