80lb injector data base tune
TECH Senior Member
Joined: Apr 2002
Posts: 6,080
Likes: 17
From: So.Cal.
Teching In
Joined: May 2015
Posts: 31
Likes: 0
From: Alberta Canada
Hey guys, I wonder if I could pick your brain for a few newbie questions.
I built a 09 Silverado with a 4.8- put a kb racing turbo kit on (76mm) i got the tuning school level 1 and 2 courses. With hp tuners.
I went with semiens deka 80's cause of the seemed
Cost and popularity, but she's hunting at idle, the LTFT aren't that bad (+- 4) but i can't get it to stop hunting at idle. I suspect it's because I don't have the injector data. I did calculate my inj flow rate and scale my 'injector flow rate vs KPA' table accordingly. But still I feel like I need the proper data.
Following this thread, I found your spread sheet, my question is the Column labels up across the top do not directly follow what the sheet says for short pulse adder?
Also I do have the stock returnless set up for now, how would i input the volt-KPA-pressure table data with the standard 58psi constant gm system?
These may be pretty basic questions, I apologize, I am still grasping a hold on the whole
Tuning process. Thank you so much for your time!
I
I built a 09 Silverado with a 4.8- put a kb racing turbo kit on (76mm) i got the tuning school level 1 and 2 courses. With hp tuners.
I went with semiens deka 80's cause of the seemed
Cost and popularity, but she's hunting at idle, the LTFT aren't that bad (+- 4) but i can't get it to stop hunting at idle. I suspect it's because I don't have the injector data. I did calculate my inj flow rate and scale my 'injector flow rate vs KPA' table accordingly. But still I feel like I need the proper data.
Following this thread, I found your spread sheet, my question is the Column labels up across the top do not directly follow what the sheet says for short pulse adder?
Also I do have the stock returnless set up for now, how would i input the volt-KPA-pressure table data with the standard 58psi constant gm system?
These may be pretty basic questions, I apologize, I am still grasping a hold on the whole
Tuning process. Thank you so much for your time!
I
i'm messing with a turbo set up using a denmah tune for a base
his minimum injector pw is .648 and min fuel milligrams is .029
the transient fuel mass (fuel boiling time vs ECT vs MAP in HP tuners) is roughly double of jake fusion's numbers.
so far tuning this truck is coming along pretty good. I'll give Jake's numbers a try and see what gives.
also, my FPR is not boost referenced
his minimum injector pw is .648 and min fuel milligrams is .029
the transient fuel mass (fuel boiling time vs ECT vs MAP in HP tuners) is roughly double of jake fusion's numbers.
so far tuning this truck is coming along pretty good. I'll give Jake's numbers a try and see what gives.
also, my FPR is not boost referenced
Last edited by truckdoug; Sep 18, 2016 at 06:18 PM. Reason: oops TFM is not half, it's double
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Joined: May 2015
Posts: 31
Likes: 0
From: Alberta Canada
here is my latest tune, I havent gotten far really, I also added my latest idle attempt, you will have a better idea of whats going on, im still learning how to read my charts. once i interpret this data, im really hoping it helps the hunting.
Teching In
Joined: May 2015
Posts: 31
Likes: 0
From: Alberta Canada
injector data attempt ok, so because the values for the volts vs kpa vs pressure table were quite a bit different on my tables than the spread sheet, I tried some other data for the 80s that came to be at just the right time. The data comes from the good folks at tampa tuning.
It did take most of the hunting out of the idle, it was a lot smoother, but if you look at my log file, the timing was hunting a bit.
now I am not sure if the tampa tuning was ford data, because at the top it said something about ford injector. anyway, I will play with the maf calibration to get the LTFT better, because it was way out with the new data. I also still want to figure out how to input the data in this thread seeing as some of you guys had such good luck with it.
if anyone could chime in about what to do if your values are different than the values in the spread sheet, it would be great. Thanks guys!
I attached the data, my tune file with the data and my log, if your interested
It did take most of the hunting out of the idle, it was a lot smoother, but if you look at my log file, the timing was hunting a bit.
now I am not sure if the tampa tuning was ford data, because at the top it said something about ford injector. anyway, I will play with the maf calibration to get the LTFT better, because it was way out with the new data. I also still want to figure out how to input the data in this thread seeing as some of you guys had such good luck with it.
if anyone could chime in about what to do if your values are different than the values in the spread sheet, it would be great. Thanks guys!
I attached the data, my tune file with the data and my log, if your interested
Teching In
Joined: May 2015
Posts: 31
Likes: 0
From: Alberta Canada
ok I tried the data from this thread, seemed to run very similar to the tampa data. I stuck with this data however, I played with the MAF calibration table (its in MAF only mode) to try and get the LTFTs a little better, I had some success, not sure how you guys do it, I did it all in park just idling, got it down to +-3 in park, but then I took it for a drive and the numbers were all over the place, like 27% in some instances.i attached both data logs and my current tune in case your interested. Also my WB02 was reading like 11, so somehow I need to set the commanded AFR, not sure how to do that yet, but I think my course will show me, once I get there. My next step is do some VE tuning. then more part throttle tests for further calibration.
TECH Senior Member
Joined: Apr 2002
Posts: 6,080
Likes: 17
From: So.Cal.
Teching In
Joined: May 2015
Posts: 31
Likes: 0
From: Alberta Canada
Thanks joe, yeah that's kinda what I ended up doing. It seems to be idling pretty well now, the only real concern I have is it idles at 11-11.5 AFR. My fuel trims Are pretty good, so makes me think the Ecu is commanding such a rich condition, and I'm not sure how to fix it. I found the table that adjusts AFR at WOT but not for idle. Any ideas? I can post a current log and tune if you want
Teching In
Joined: May 2015
Posts: 31
Likes: 0
From: Alberta Canada
I just happened to find a recent thread, another guy posted, same problem as me and his injector data is exact same as mine. I posted my files there, here's a link, someone suggested adjust the 'minimum fuel milligrams' value, but being new, I was unable to find this table/ value. (I have hpt 3.0 btw) thanks again for your help man!
https://ls1tech.com/forums/pcm-diagn...dles-rich.html
https://ls1tech.com/forums/pcm-diagn...dles-rich.html
Teching In
Joined: May 2015
Posts: 31
Likes: 0
From: Alberta Canada
min fuel mg so I was looking at a hpt file of sloppy mechanic's that was in hpt version 2.2. I found the min fuel milligrams right away. problem being I have HPT 3.0 and its not in the same spot, or its not called the same thing. heres a screen shot, anyone know where to find the equivalent???
no, that is under engine>transient>transient fuel qualifications>min fuel milligrams
i am using the denmah numbers (0.029) and it seems to jive with all the other denmah numbers for the deka 80s.
i am using the denmah numbers (0.029) and it seems to jive with all the other denmah numbers for the deka 80s.