Pulls all timing under boost
12-11-2003, 08:54 AM
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Pulls all timing under boost What am I missing here? It's an 02 C5 with a Vortech. As soon as the car sees boost, it just lays down. EFI live shows the timing goes all the way to Zero at times. No knock retard, just pulls all the timing.
It's not the 1514 code or anything. That's gone.
I had the exact same thing happen on an 01 last year. I just ended up having it tuned elsewhere and don't know what they did. I'm positive that there is a table that I'm just not aware of. Any help?
Thanks
It's not the 1514 code or anything. That's gone.
I had the exact same thing happen on an 01 last year. I just ended up having it tuned elsewhere and don't know what they did. I'm positive that there is a table that I'm just not aware of. Any help?
Thanks
12-11-2003, 09:08 PM
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Originally Posted by Slowhawk
What's your complete setup and tune?
All I did was copy the timing tables, and a couple of other things from a friends stick shift car. I know the tune is not going to be perfect but it shouldn't do this.
What is different about the automatics?
12-12-2003, 12:13 PM
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If you did not delete torque management you will get all your timing pulled on shift.
Gary
Gary
Originally Posted by Dumbkid
It's a bone stock C5 auto.
All I did was copy the timing tables, and a couple of other things from a friends stick shift car. I know the tune is not going to be perfect but it shouldn't do this.
What is different about the automatics?
All I did was copy the timing tables, and a couple of other things from a friends stick shift car. I know the tune is not going to be perfect but it shouldn't do this.
What is different about the automatics?
11-19-2007, 12:39 PM
#7
Old post but bump.. I've done quite a few of these things and now all of a sudden I got a car that seems to go between 0 and -4.5 degrees at around 5psi. Its a auto vette. commanded 18 degrees with 3 or so pulled out in the boost retard table (os 3 efilive)
What is the fix for this?
What is the fix for this?
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11-19-2007, 01:28 PM
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First place I'd look is burst knock retard. It will NOT show up under the regular knock retard pid in the scanner. You'll have to log GM.EST_KRB_DMA to see if that's the culprit. If so, then you'll need to adjust B6210 Burst Knock Delta Air Mass by increasing it 200~300%.
Then, I'd look at IAT's and what the B5911 Spark IAT Table might be pulling from the commanded timing.
Then, I'd look at IAT's and what the B5911 Spark IAT Table might be pulling from the commanded timing.
