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DSMLINK when disconnected battery

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Mike_GSX

15+ Year Contributor
125
0
Feb 24, 2004
Zurich, Europe
Hi, I've got a little question.
Did I understand that right, that if I disconnect the battery from the car, that the DSMLINK adjustments to the timing and "WOT" will get lost, but after reconnecting the battery they come back.
Or is it so, that when I disconnect the battery, that the values get lost and I have to write it new with a lap-top to the ecu?


Thanks a lot

Mike_GSX
 
The 1gs keep the information when the battery is disconnected, but the 2gs revert to the base settings that the DSMLink guys burned onto the chip.
 
so that means, I have to connect it with my lap-top and burn the settings with the adjustments to the timing and "WOT"new through dsmlink to the ecu?

thanks

Mike_GSX
 
My 1g has done that also a couple of times when I unhook the battery. I was wandeing about that, I thought 1g's were supposed to save the data.
 
with a 2g and the most current version of DSMLink for 2g's when you reconnect your battery the settings you has saved will be gone. The only thing that will keep is INJ setting that you has the chip set to when it was created. If the chip has no setting then the ECU will be totally stock. You will have to reconnect your laptop,a nd reapply all your setting to the ECU so you will have your tune back.

For the 2g guys, this will be taken care of in DSMLink V3
 
No, there is no release date on V3, but me personally i can hold my breath. Its going to be freaking awsome when it is finished.
 
Just to rehash: the 1G does have the memory board that "should" retain settings even if the battery is disconnected, the 2G DOES NOT (at this time).

Although, if the settings are lost in either, you can take the last (or best) log with the appropriate settings and load them onto the ECU. You could also use an ECU.config file if you saved one.

You don't have to re-tune the setup if you loose power, it's just a simple reload of settings and you're good.
 
You could just buy the memory keepers from Autozone or Napa... I bought one from there, and it does everything it says... it keeps all the info stored on the ECU, stereo, everything... all it needs is a 9 volt battery, and it will keep the memory when you disconnect the battery... It works, I have used it more than once, just dont overload the 9volt battery though... like blasting your stereo, or keeping your lights on, and everything else...
 
FORMONTOYA said:
Although, if the settings are lost in either, you can take the last (or best) log with the appropriate settings and load them onto the ECU. You could also use an ECU.config file if you saved one.

You don't have to re-tune the setup if you loose power, it's just a simple reload of settings and you're good.

CanadianTSi said:
Yep you can just save all your settings to a file and then just load that file, simple.
Interesting. I just recently lost all of my settings (and I wont need them for a while, as my car is down for the season), but I did save a log of my most current tune right before I pulled my battery. I hate to sound like a total newb, but how exactly do you 'load' a saved tune? Regarding dsmlink, I haven't really played around with much more of the program that I have to. There's probably alot of cool features that I don't even know about yet.

Dragon TalonTsi said:
You could just buy the memory keepers from Autozone or Napa... I bought one from there, and it does everything it says... it keeps all the info stored on the ECU, stereo, everything... all it needs is a 9 volt battery, and it will keep the memory when you disconnect the battery... It works, I have used it more than once, just dont overload the 9volt battery though... like blasting your stereo, or keeping your lights on, and everything else...
Curious, but how much did this cost?
 
Just open up the last saved log (or ECU.config) you want to load back onto the ECU.....then under the ECU menu "pull down" go to "Load/Save/Type", then hit "Save to ECU". The last log settings will now be saved back to the ECU.

That's how I actually go from a "summer" tune to a "winter" tune. A couple of 3rd gear pulls for confirmation, and all is good.


I'm curious about the "memory" thing from AutoZone as well.


edit: A log file will restore the tuning settings minus the "captured value" settings (you might have to redo this depending on what you log). An ECU config file will restore both tuning settings and also the "captured value" settings.
 
Hi,

how many of you did the memory keepers thing.
does it work? Is it hard to get done?

thanks

Mike_GSX
 
The cigarette lighter style memory saver will not work on a 1g (and a galant vr4), as the cigarette lighter socket is not "live" until the key is on. I don't know if the 2g lighter socket is live, key off. [It isn't on 2Gs, either.]

In addition, just opening the door and triggering the dome light is enough to drop the voltage below the keep alive threshold on many vehicles, using the 9volt style...

Depending on why the system is being powered down, you can use a battery jump box across the alternator positive terminal, and then put the other battery box clamp to a good chassis ground, As far as the car knows, it still has a battery connected.

I usually use an insulated, fused (10 amp) alligator clip jumper wire from the jump box to the alternator positive post, as the large jump box cables clamps are difficult to get on and off the alternator without sparking. Please, be very carefull doing this, if you arc the post to ground, you'll piss the alternator off something fierce...I always connect the insulated, fused alligator clip wire to the alternator post first, before making any other connections.

I do this when I change batteries in high end cars to prevent adaptive memory loss, as well as retain all the comfort/climate control/seat/radio settings. Later model cars will take a long time to reprogram....Note; the battery terminals will be live, so you touch the positive to something, you'll get a light show:nono: Just wrap it in a rag or something, to prevent it from touching ground.

This is not a technique for the slow of thought


But, if you run a lot of aftermarket gear in your car, it can save you hours of frustration reprogramming all your settings.
 
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