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Old 09-25-2023, 01:59 AM   #1
wastepile
 
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Tunes

Let's say I have a Dyno done by a professional shop. Now I then get my own handheld device and do a backup. I then make a change, and then at some point reload the origanal back up I saved. Will it still be the same as when I got my original tune from the Dyno or does the hand held device mess up the Dyno settings?
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Old 09-25-2023, 07:27 AM   #2
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You probably need to be on the same system as the dyno shop. For example, both my tuner and I use HPTuners and I have my own credits so I can access and copy his tune or make small adjustments myself. I'm not sure how it would work with different systems.

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Old 09-25-2023, 10:13 AM   #3
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as long as your dyno tuner didn't lock his tune, yes the handheld would read/save it as the "original backup" stock tune... and when you did a "restore backup", it would put that dyno tune back on the way it was...
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Old 09-25-2023, 10:17 AM   #4
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Old 11-08-2023, 08:29 AM   #5
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Quote:
Originally Posted by wastepile View Post
Let's say I have a Dyno done by a professional shop. Now I then get my own handheld device and do a backup. I then make a change, and then at some point reload the origanal back up I saved. Will it still be the same as when I got my original tune from the Dyno or does the hand held device mess up the Dyno settings?
Hand Held tuners are not meant to modify custom tunes and I would highly recommend against trying it.

Besides that you have very limited options, Fans setting, speed limiter rev limiter and Idle speed, maybe skip shift.

All of which are typically accounted for in a custom tune.

If you need something changed contact your original tuner.

Ted.
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Old 12-13-2023, 07:20 PM   #6
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Quote:
Originally Posted by JANNETTYRACING View Post
Hand Held tuners are not meant to modify custom tunes and I would highly recommend against trying it.

Besides that you have very limited options, Fans setting, speed limiter rev limiter and Idle speed, maybe skip shift.

All of which are typically accounted for in a custom tune.

If you need something changed contact your original tuner.

Ted.
Agreed.
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Old 12-14-2023, 09:07 AM   #7
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Also agreed with the above. Don't mess with the custom dyno tune with a hand held. Do it right and let your tuner make any changes you might want. When they do a custom dyno tune they tune for driveability, AF, timing, trans shift points and pressures if you have an auto car and it all works together to run "correctly and safely", you go in there and start dinking with the tune, you run the risk of doing some damage possibly because now it doesn't communicate properly with everything.
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