EFI live, 160lb injs, E85, resistors, only runs WITHOUT the fuel pump on?
#1
EFI live, 160lb injs, E85, resistors, only runs WITHOUT the fuel pump on?
This is strange. I can get my car to fire up if I turn the fuel pump on for a few seconds and then shut it off. After doing this I fire it up and it idles and revs. Not perfect but not far off. As soon as you turn the fuel pump on the car floods out. Any ideas? I have another pcm that is tuned using Hptuners and it runs and idles fine. I transfered everything to from that tune to an EFI live tune but obviously I have done something wrong. I am thinking it has to be with the injector settings but today I tried everything and still couldn't get it to run with the fuel pump on. How crazy is that?
Please help before I give up on EFI live.
Please help before I give up on EFI live.
#2
TECH Senior Member
So when the fuel pump is off, how's the engine getting fuel...?
It runs fine on your other PCM, but it runs bad (flooding) with this PCM...
I'm thinking maybe the IFR is incorrect for these injectors and/or fuel rail pressure.
It runs fine on your other PCM, but it runs bad (flooding) with this PCM...
I'm thinking maybe the IFR is incorrect for these injectors and/or fuel rail pressure.
#3
11 Second Club
iTrader: (43)
If you transferred from a known good tune, then I'd suggest it being something with the 2 bar or 3 bar setup. I'm not familiar how efi live does it, but with hp tuners if you want to have a boost setup, you have to have the custom operating software that makes your ve table go up to boost kpa's. Check to see if that's it.
#4
If you transferred from a known good tune, then I'd suggest it being something with the 2 bar or 3 bar setup. I'm not familiar how efi live does it, but with hp tuners if you want to have a boost setup, you have to have the custom operating software that makes your ve table go up to boost kpa's. Check to see if that's it.
#5
11 Second Club
iTrader: (43)
That's not it. Hptuners has the VE table that has normal and boost. EFI live has a Main VE table and then a boost table. The end of the Main VE is 105kpa and the beginning of the boost table is 105kpa. I just set the tune up for Main VE first and then highlighted the entire 105kpa and clicked "copy with labels" I then "pasted with labels" in the 105kpa column in the Boost VE table and then finished the tune up to 20lbs of boost even though I only hit 15lbs. So I don't think that is it. It may not be perfect but it should at least run with how I have the VE tables. It has to be something with how the injector information or the fuel pump being on a toggle switch and NOT being run by the computer. With everything else the car should at least run. It may run like **** at first but it should fire up.
My second guess would be that your fuel pressure is too high or the IFR isn't correct for the fuel pressure your running.
Whats your base pressure and how'd you set it? Can you post both of your tunes?
#6
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Location: on the dyno tuning in MD
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Do you have the .cax file for your OS so that you can lower the injector minimum pulse width on table B9021 below the hard limit?
Sounds like you have an EFILive custom operating system - was it installed into the PCM correctly using the tutuorial?
Post up your tune so we can take a look at it...
Sounds like you have an EFILive custom operating system - was it installed into the PCM correctly using the tutuorial?
Post up your tune so we can take a look at it...
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#8
Are you sure you didn't mix up your units?
With a vette FPR ~60 psi you should have something like this in grams/sec:
23.278763
23.423843
23.568030
23.711341
23.853790
23.995394
24.136167
24.276124
24.415279
24.553644
24.691235
24.828063
24.964141
25.099482
25.234096
25.367996
25.501193
With a vette FPR ~60 psi you should have something like this in grams/sec:
23.278763
23.423843
23.568030
23.711341
23.853790
23.995394
24.136167
24.276124
24.415279
24.553644
24.691235
24.828063
24.964141
25.099482
25.234096
25.367996
25.501193
#10
I will. My base pressure is 50psi. That is off the regulator that is off the rails.
#11
#12
Are you sure you didn't mix up your units?
With a vette FPR ~60 psi you should have something like this in grams/sec:
23.278763
23.423843
23.568030
23.711341
23.853790
23.995394
24.136167
24.276124
24.415279
24.553644
24.691235
24.828063
24.964141
25.099482
25.234096
25.367996
25.501193
With a vette FPR ~60 psi you should have something like this in grams/sec:
23.278763
23.423843
23.568030
23.711341
23.853790
23.995394
24.136167
24.276124
24.415279
24.553644
24.691235
24.828063
24.964141
25.099482
25.234096
25.367996
25.501193
#13
Do you have the .cax file for your OS so that you can lower the injector minimum pulse width on table B9021 below the hard limit?
Sounds like you have an EFILive custom operating system - was it installed into the PCM correctly using the tutuorial?
Post up your tune so we can take a look at it...
Sounds like you have an EFILive custom operating system - was it installed into the PCM correctly using the tutuorial?
Post up your tune so we can take a look at it...
#14
Here is the EFI live tune that I cannot get to work. I have not tried lowering the IFR to 69 yet as per the HPtune. It is a COS3 and yes it was done correctly.
I am also sending a second tune that we tried. The one that says Lamba was the one that I was messing with. That is the one that starts the car but without the fuel pump on. The other tune is one that someone did for me that is does them all the time.
I am also sending a second tune that we tried. The one that says Lamba was the one that I was messing with. That is the one that starts the car but without the fuel pump on. The other tune is one that someone did for me that is does them all the time.
#15
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Location: St. Michael, MN.
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I see alot of inconsistencies between the the different tunes.The stoich value in the HPT tune is 14.68 (gas) and the stoich value in the EFILive tune is 9.80 (E85) and in one of the tunes it's 1.00. There's also discrepancies in the IFR values in the EFILive tunes; 1 has a range of from 159 to 168 lb/hr, one with the same values in all cells (171) and another with wild numbers. Confirm what injectors are installed, then get the correct data, set the stoich based on gas or E85, then tune from there. Once again, something was lost in translation when converting the tunes.
#17
Again, maybe I am not explaining the correct. The tune you see for HP is what we pulled off my computer. That is NOT, NOT, NOT the hptune I tried to copy. I tried to copy the HPtune that I was told was in my pcm but when we read the pcm it had the IFR set at low numbers like 69 in the first table. Right or wrong that is the tune in the pcm that runs and runs good (not great)
#18
Unrelated but I have the opposite problem, my tuner guy uses EFI live and I about bought HP before I found out. I called to be sure he had hp tuner and he said no efi. I went oh...he goes you already bought HP tuner didn't you? Luckily I had not. good luck I'm going efi live myself.