Unexpected power increase with change of battery - Mustang Evolution

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Old 01-28-2014, 04:44 PM   #1
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Unexpected power increase with change of battery

Be recently change my old battery and I replaced it with a new battery since I was in need of it.
I've notice my car got a more deeper sound and also it seems as if it also gain a little more power.
Is this possible with a simple battery change?BTW I have a 1997 gt
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Old 01-28-2014, 04:48 PM   #2
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Yeah should be atleast 15rwhp
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Old 01-28-2014, 04:54 PM   #3
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If by battery you mean turbo, then yes. It is possible.
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Old 01-28-2014, 05:55 PM   #4
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Lol!
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Old 01-28-2014, 05:56 PM   #5
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Unexpected power increase with change of battery

Please tell me this is a January Fools joke. 😑
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Old 01-28-2014, 08:11 PM   #6
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Only thing I can think of is when you changed the battery the computer was reset. This will let the idle relearn. That would be the only thing I can think of
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Old 01-28-2014, 08:14 PM   #7
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Quote:
Originally Posted by Mfore33 View Post
Only thing I can think of is when you changed the battery the computer was reset. This will let the idle relearn. That would be the only thing I can think of

That's possible! Wouldn't give any extra power but might change throttle response back to default. But I'm lost on the deeper exhaust sound bit. That's impossible (unfortunately). Lol
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Old 01-28-2014, 08:34 PM   #8
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The PCM would also have been forced to relearn the long term fuel trims, sensor baseline values and several other adaptively learned operating parameters--I used to deliberately reset the PCM on my '03 2 or 3 times a year as what we have here for "seasons" changed....
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Old 01-28-2014, 08:43 PM   #9
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Not really tech... Moved to GMD
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