PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Can't get 2bar EFI Live to run more than 3 seconds.

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Old 11-30-2006 | 05:36 PM
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Default Can't get 2bar EFI Live to run more than 3 seconds.

Installed a gm 12580698 2bar. Unplugged the maf.

Downloaded a 2bar starter tune. Verified key on engine off = 94kPa.

No DTC's

Car starts and idles smoothly for 3 seconds and shuts off.

Any ideas? TIA.
Old 11-30-2006 | 10:04 PM
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Probably a dumb question. Did you set the MAF high frequency fail to 0?
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Old 11-30-2006 | 10:23 PM
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Yep, checked that one.
Old 11-30-2006 | 10:25 PM
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After you rescaled the map scaler for the 2 bar did you check it again? Also what "starter" tune are you talking about? You might be better off using the tutorial and starting from scratch.

What kind of setup do you have?


Howard
Old 11-30-2006 | 10:45 PM
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Originally Posted by Redline-Motorsports
What kind of setup do you have?


Howard
Crazy setup.
Old 11-30-2006 | 11:01 PM
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Originally Posted by Redline-Motorsports
After you rescaled the map scaler for the 2 bar did you check it again? Also what "starter" tune are you talking about? You might be better off using the tutorial and starting from scratch.

What kind of setup do you have?


Howard
Yep, scalar at 188. Key on = 94.

I bought a Moates RR from Jes Bubb and he kindly set up a COS5 starter tune since my original OS is 1999. I'd hate to start from scratch since the 1999 has to be hand loaded...but I might have to.

Black02SS has been very helpful also with trouble shooting suggestions.

set-up is a twin turbo 428 ci Firebird.
Old 11-30-2006 | 11:09 PM
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The last file I sent you is COS5 with the SAME values as the other tune of yours that runs. I went through and manually copied over every table/cell to the new one. This will tell me if some of your tables need to be reset due to not having a MAF. Did you get a chance to try that last tune I sent?
Old 11-30-2006 | 11:11 PM
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First thing in the morning....my wife ran me out of the garage...lol
Old 11-30-2006 | 11:13 PM
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Shot me a email or give me a call if you want. I'll be up and we can see if we can't get this sorted.
Old 11-30-2006 | 11:21 PM
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i'm ready to hear about this one... ready to see about this crazy setup
Old 12-01-2006 | 01:38 AM
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Can you tell whether the fuel pump is being cut off
after start?
Old 12-01-2006 | 03:43 AM
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Check the Axxx Custom values, wrong values or DEFAULT values in there can cause that. Also I had a similar problem it was due to old .cal files messing with me. Check your cal files are up to date.
Old 12-01-2006 | 07:49 AM
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Also mae sure all of your fueling tables are being inputted with the right numbers ie if you are wanting Eq ratio make sure you arent entering lambda and vice versa
Old 12-01-2006 | 08:43 AM
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Chad's new file worked!
Old 12-01-2006 | 08:57 AM
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I sent you a PM.
Old 12-01-2006 | 10:22 AM
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I might have started with a pre beta os5 and the file wasnt set up internally to run on the roadrunner. ? I would just try transfering the Cal changes over to the latest os release for the 05.
Old 12-01-2006 | 11:28 AM
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Originally Posted by wait4me
I might have started with a pre beta os5 and the file wasnt set up internally to run on the roadrunner. ? I would just try transfering the Cal changes over to the latest os release for the 05.

Just tried that. I have a COS5 that will start in the RR.

I flashed your cal into it....does the same thing ...idles 3 seconds and dies...somethings wrong with the cal file
Old 12-01-2006 | 11:30 AM
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The safety checksum is not dissabled in it so the computer will shut my cal down. Just manually transfer over all the tables that are different one by one to the file that works..
Old 12-01-2006 | 04:06 PM
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Originally Posted by wait4me
The safety checksum is not dissabled in it so the computer will shut my cal down. Just manually transfer over all the tables that are different one by one to the file that works..
Tried that this afternoon. Something is wrong with the cal file.
Old 12-01-2006 | 08:09 PM
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Originally Posted by wait4me
The safety checksum is not dissabled in it so the computer will shut my cal down. Just manually transfer over all the tables that are different one by one to the file that works..
Found something strange in the main VE table Jes.

When I do a compare to another tune, sometimes a different set of numbers appear in the table.....strange...almost like a ghost overwrite...




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