any way to lose a tune?

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Mar 23, 2006 | 10:00 AM

00formLs1

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From: las cruces, new mexico

any way to lose a tune?

can you lose a tune by disconnecting the battery. or anything like that.

Mar 23, 2006 | 10:03 AM

MeentSS02

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From: Dayton, OH

Nope. You can leave the battery disconnected for as long as you want, and the tune will stay. If you are running a closed loop tune, it will lose any learned values (like your fuel trims), but those will be relearned in a short amount of time.

Mar 23, 2006 | 10:06 AM

00formLs1

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From: las cruces, new mexico

thanks, i was afraid it might reset the pcm to stock.

Mar 23, 2006 | 10:09 AM

MeentSS02

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From: Dayton, OH

Quote:

Originally Posted by 00formLs1

thanks, i was afraid it might reset the pcm to stock.

It is a valid concern...tunes ain't cheap

Mar 23, 2006 | 10:31 AM

horist

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From: Lake Zurich, IL

This is also addressed in the forum stickies
https://ls1tech.com/forums/pcm-diagnostics-tuning/287094-read-me-first-tuning-docs-ve-maf-ses-lights-faqs-more-01-31-07-a.html

Mar 23, 2006 | 10:32 AM

MeentSS02

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Stickies...what are those?!?

Mar 23, 2006 | 11:10 AM

Minion

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It's kinda obvious, but I'll point out one way to lose a tune is if the dealer (or some other service tech) reprograms it. In some cases people have lost expensive custom tunes when the dealer erased them without permission.