Tune question?
Thread Starter
Team Owner
Joined: Jan 2004
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From: HOUSTON
St. Jude Donor '06 thru '15, '19
Tune question?
After cam install the tuner had to tweek the tune a couple of times to get it perfect. I unplugged the battery for about an hour or so and and now when I replugged it the car seems like it reverted back to some things before the tune was perfectect, could unplugging the battery cause this? It would hold idle to abut 1500 , the drop down where it should be ,before the last tweek.Should I give it a couple of days to see it it will relearn the tune? Seems strange to me ????? 
Melting Slicks
Joined: Jul 2006
Posts: 3,356
Likes: 1
From: Chesapeake Va
After cam install the tuner had to tweek the tune a couple of times to get it perfect. I unplugged the battery for about an hour or so and and now when I replugged it the car seems like it reverted back to some things before the tune was perfectect, could unplugging the battery cause this? It would hold idle to abut 1500 , the drop down where it should be ,before the last tweek.Should I give it a couple of days to see it it will relearn the tune? Seems strange to me ?????
Thread Starter
Team Owner
Joined: Jan 2004
Posts: 23,220
Likes: 3
From: HOUSTON
St. Jude Donor '06 thru '15, '19
Melting Slicks
Joined: Mar 2005
Posts: 2,364
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From: Rugby North Dakota
I'm not a tuner, but from what I understand, once your Vette's computer is reflashed/reprogrammed, it will NOT revert back to prior settings without being "reflashed" by a programmer - and disconnecting the battery should be similar to unplugging your home computer from the wall outlet
Thread Starter
Team Owner
Joined: Jan 2004
Posts: 23,220
Likes: 3
From: HOUSTON
St. Jude Donor '06 thru '15, '19
I'm not a tuner, but from what I understand, once your Vette's computer is reflashed/reprogrammed, it will NOT revert back to prior settings without being "reflashed" by a programmer - and disconnecting the battery should be similar to unplugging your home computer from the wall outlet
I would have never thought it either but it sure is doing it and didnt happen until I unplugged the battery. I installed HID lights and for sure dont thing that would cause a problem. The car runs pretty good but the it has the surging problem that it had before the last tweek. If it comes down to it I will take it back to the tuner and have it reset but I would like to know why its did this ..... its very strange.
Melting Slicks
Joined: Jul 2006
Posts: 3,356
Likes: 1
From: Chesapeake Va
I'm not a tuner, but from what I understand, once your Vette's computer is reflashed/reprogrammed, it will NOT revert back to prior settings without being "reflashed" by a programmer - and disconnecting the battery should be similar to unplugging your home computer from the wall outlet
Even a bone stock car and tune will have some issues after an interruption in battery power.
Also, if the tune was off, or if certain parts of it are off, the relearn process will take longer as the computer has to compensate even more.
Thread Starter
Team Owner
Joined: Jan 2004
Posts: 23,220
Likes: 3
From: HOUSTON
St. Jude Donor '06 thru '15, '19
This is true. But, all PCMs go thru a relearn process after you disconnect/reconnect power. The tune doesnt change, but the adjustments that the pcm makes on its own do.
Even a bone stock car and tune will have some issues after an interruption in battery power.
Also, if the tune was off, or if certain parts of it are off, the relearn process will take longer as the computer has to compensate even more.
Even a bone stock car and tune will have some issues after an interruption in battery power.
Also, if the tune was off, or if certain parts of it are off, the relearn process will take longer as the computer has to compensate even more.
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Melting Slicks
Joined: Dec 2003
Posts: 3,315
Likes: 17
From: Near Jacksonville Fl.
This is true. But, all PCMs go thru a relearn process after you disconnect/reconnect power. The tune doesnt change, but the adjustments that the pcm makes on its own do.
Even a bone stock car and tune will have some issues after an interruption in battery power.
Also, if the tune was off, or if certain parts of it are off, the relearn process will take longer as the computer has to compensate even more.
Even a bone stock car and tune will have some issues after an interruption in battery power.
Also, if the tune was off, or if certain parts of it are off, the relearn process will take longer as the computer has to compensate even more.
Melting Slicks
Joined: Jul 2006
Posts: 3,356
Likes: 1
From: Chesapeake Va