Author Topic: Saving ecm memory  (Read 2285 times)

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Offline Recap

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Saving ecm memory
« on: September 22 2020, 04:23:13 PM »
[/Any
Anybody have experience with using one of the plug in adapters that uses a 9v battery to keep the memory saved in the ecm.  Thought it might be handy to have one if they actually work.

Offline daveismissing

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Re: Saving ecm memory
« Reply #1 on: September 22 2020, 06:19:21 PM »
Interesting, I never did measure the current draw on the orange wire. I would think a 9v is marginal since some guys have gone to a small race battery and find they lose their setting on start because of the dip.
A 9v is about 500mAh so if it drew 1mA ~ less than a month. Suspect it is higher draw than that.
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Offline 1KWIKSIX

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Re: Saving ecm memory
« Reply #2 on: September 23 2020, 07:25:53 AM »
Eric Marshall offers an ECM tune saver for use with turbo tweak chips

https://www.turbotweakstore.com/SearchResults.asp?Cat=25
« Last Edit: September 23 2020, 07:31:01 AM by 1KWIKSIX »

Offline ULYCYC

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Re: Saving ecm memory
« Reply #3 on: September 23 2020, 09:00:59 AM »
They work to save ecm and radio clock settings for a car battery replacement. I'm not sure how log it will hold, maybe a hour or two.
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Offline Steve Wood

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Re: Saving ecm memory
« Reply #4 on: September 23 2020, 09:56:48 AM »
I remember a few years back when those 9 volt battery gizmos were being sold.  It does not take much to save the memory as I have had some pretty dead batteries with the ecm settings still there when the battery got charged up.  
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Offline Recap

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Re: Saving ecm memory
« Reply #5 on: September 23 2020, 11:38:16 AM »
Thanks for the input.  Was not looking to put one on for the winter or a long period of time.  Mostly as a maintenance sort of situation when the battery is disconnected for a hour or two.  Also tired of having to get owners manual for the radio so I can reprogram it everty time.  Would also allow me to disconnect the battery if I wanted to while I leave it unattended (almost never!) as a sort of security measure and retain all the data.   

Offline earlbrown

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Re: Saving ecm memory
« Reply #6 on: September 23 2020, 02:41:00 PM »
They've been making radio clock savers forever.  Odds are those are a lot cheaper than a 'tune saver'.

...and pretty much the same thing.
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