Saving ecm memory

[Recap]

[/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.

[daveismissing]

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.

[1KWIKSIX]

Eric Marshall offers an ECM tune saver for use with turbo tweak chips

https://www.turbotweakstore.com/SearchResults.asp?Cat=25

[ULYCYC]

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.

[Steve Wood]

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.  

[Recap]

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.   

[earlbrown]

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.