I disconnected my battery to take out the ECU, sent it off to InMotion, got it back 2 days later and put it back in, and the radio presets were still there? The clock in the instrument panel needed to be reset, but not the radio presets. How long do they stay?

 

Without checking the manual to see if the alarm battery has something to do with it, I'd say at least two days.

 

It was weird, I replaced my battery - the car was "battery less" for about an hour. The GPS lost it's mind, the clock in the radio went away and the clock in the tach went to 12:00.

But the radio presets were still there!

I found it odd, too.

 

The radio may have what is called a non-volatile memory chip. Does need power to retain it's contents.

 

You mean does NOT need power to retain its contents.

 

When I sent my RCM to Tighed1 the battery was unhooked for 2 weeks when hooked back up everything was as it was before. I didn't reset any programming.

 

Are you enjoying your tuning Bill ?

 

I could tell a definite improvement

Unfortunately I haven't gotten to put the "pedal to the metal" much since we've had snow/ice around the last week or so. I have my own little part of the highway that I run 1/4 times on with my IPod/Rev so I'll see what the actual improvement is later, but it feels good