Can anyone give me a hand with my tune? I have a 2001 6.0l with cnc ported 317 heads flows are [email protected] intake and [email protected] on the exhaust. Im running a comp roller cam 54-456-11 duration 219int/227ext @.50 and .607int/.614exh LS112 i have 12613411injectors, long tube headers and a built 4l80e trans. the tune just isn't right. it seems sluggish and the LTFT is maxed out.
Last edited by Kevin flynn; 05-18-2022 at 09:40 AM.
Fix your injector data.
That part number comes back at 36lb/hr and not 41lb/hr. Also injector data is more than just the flow rate. I don't have the data for those injectors but you'll need to figure out how to get the GEN 4 injector data into GEN 3 format. Maybe someone already has the data for those injectors.
Looks like you have a later model MAP sensor on this too, possibly the intake as well.
And get a wideband oxygen for tuning.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
Returnless 58psi or return/referenced?
I'm using injector data I found on the forum from supernova I think. He did the conversion for someone else a while back. Ill attach the file. I'm using a TBSS style intake and map and my fuel regulator is a return style but not referenced.58psi
Here is the injector data
workingtune 12613411.hpt
source data taken from:
2010 Silverado 1500 3GCPCSE06AG217043 (flex 38lb 12613411).hpt
thank you. correct me if I'm wrong but to use this injector flow rate I will need to have my fuel pressure regulator hooked up to manifold vac so it varies pressure right?Originally Posted by blindsquirrel
No, a referenced regulator uses flat-line data, where fuel pressure changes 1:1 with manifold pressure (vacuum is still pressure, just measured independent of atmospheric). That was the biggest error in the data you had in there before. The other tables were fairly close, differences are mainly down to taste in the way the data is converted.
A return regulator that isn't manifold-referenced is no different than the regulator in the tank that bleeds off anything over the set point. Where it's located doesn't change anything.
If you do go to using manifold reference later, just copy the 0kPa column in Flow Rate vs kPa & Offset vs Volts vs Vac and paste into every column, so that it's the same all the way across.
Well i decided to load that calibration file in just to see and it looks a lot better already.testrun4.hpl mysetup.Layout.xml also i added the layout for my VCM scanner in case that helps. Sorry if I'm doing things wrong or overkill This is my first experience with HP tuners
Awesome thank you for the help!
screenshot.18-05-2022 14.56.04.png
I don't like that at all. O2s should be steady and rich while in PE, and they're not.
TBSS MAP should be linear=94.43, Offset=10.33. Do you have a part number to verify what it is?
screenshot.29-04-2022 14.22.10.png
2005-2008 on top, 94.43/10.33; 2009 on bottom, 128.20/-0.31.
ACDelco 12594942
looks like the one on the bottom
I thought that the O2 didnt look right. could it have anything to do with my VE table? i made an attempt at tuning the VE after reading a few write ups on how to do it. However that was done with my injector data wrong. I started with the tune file below and have been making changes to it as i go.
Last edited by Kevin flynn; 05-18-2022 at 03:34 PM.
Also im running Bosch 13029 O2 sensors
Oh, yeah, you'll definitely have to re-do any MAF/VE tuning done before.
Fix your MAP Sensor Offset, should be -0.31 (negative oh-point-three-one).
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