email me your tune file
Tuning out hot start issues
- Thread starter SnakeBoostE85
- Start date
sent the mtf file over.... do you have any diesel experience?
very limited, I'm not equipped to do diesels
your file is an outdated FBGH0 strategy file. Can you open an AMZ2 file with your prp?
your file is an outdated FBGH0 strategy file. Can you open an AMZ2 file with your prp?
Yes I can... I had them give me both.
good, use it instead.
Send me your amz2/fbgi0 file
you also have the injector deltap multipliers and battery offset corrupted in the tune. Be sure to fix that.
Send me your amz2/fbgi0 file
you also have the injector deltap multipliers and battery offset corrupted in the tune. Be sure to fix that.
Interesting... I never messed with any of that after the original person who built the baseline tune gave me the mtf file. I’ve done a lot of little drivability tweeks. How would I go about fixing it? How do you know it’s corrupted in prp?
appreciate the help!
appreciate the help!
They come up fine in prp... assuming these are the tables you are referring. What is indicating corruption on your end?
you can see its corrupted there
in a functions the x axis top and bottom most values must always be set to maximum otherwise the ecu will go off in lala land if the input is out of that range
The 60 and 20lb need to be set back to 128 and 0
15.89 and 6 v need to be set back to 15.99 and 0
no exceptions
Do's, Don't's & Common Mistakes / EFIDynoTuning
in a functions the x axis top and bottom most values must always be set to maximum otherwise the ecu will go off in lala land if the input is out of that range
The 60 and 20lb need to be set back to 128 and 0
15.89 and 6 v need to be set back to 15.99 and 0
no exceptions
Do's, Don't's & Common Mistakes / EFIDynoTuning
Much appreciated- I suspect these bad values may have come from the ID1000 value files from SCT.
I will load this up tomorrow and give it a shot.
I will load this up tomorrow and give it a shot.
Does this look correct? My only concern is that I can't add rows to maintain the same values and granularity in the function. These are pretty close to perfect linear equations. So perhaps I just calculate the slope values for 128 and 0 and insert those to complete the linear function?
Last edited:
you got it. 0 deltap should always be lower than 20 deltap. Toss a .7 in there for good measure.
Did the pump prime time help with the hot starts?
Did the pump prime time help with the hot starts?
I haven’t tried it yet figured I clean up these tables and reload all the tunes onto my device
Do you mind sharing how you adjusted the pump prime? Also wondering if you can adjust based on rail temp. If it’s cold, don’t need long prime.
I’m familiar with hex and binary editors. Is that what your using?
I’m familiar with hex and binary editors. Is that what your using?
You can do it yourself no problem, just rewrite the code to make it do whatever you want. I have a full disassembly write up on my website that tells you everything you need to know.
I'll definitely check it out. Let me ask you this then... do you think its possible for the ECU to accept input from an ethanol sensor to adjust the stoich setting automatically - (true flex fuel)?
OK fixed the deltap tables and loaded the new tune. Heat soaked the crap out of it, brought it back home, let it sit for about 6-7 minutes, let the prime run for 10 seconds and what do ya know..... starts right up like a dream come true.
Decipha - your the shizzle man!
Decipha - your the shizzle man!
cool
yea you can wire up an ethanol sensor to an unused input and write code to have it change stoich but thats not true flex fuel.
True flex fuel would require a spark modifier, wbo2 C/L corrections and startup compensation as well at a minimum.
yea you can wire up an ethanol sensor to an unused input and write code to have it change stoich but thats not true flex fuel.
True flex fuel would require a spark modifier, wbo2 C/L corrections and startup compensation as well at a minimum.
Yeah I didn’t mean true flex fuel - more like enough to compensate for a 68% - 86% blend
Users who are viewing this thread
