Corrupt MS firmware?

[Nebraska_e28]

My car has been sitting with the battery unhooked for about 6+ months. I finally got things back together but there's a horrid miss. I pulled all the plugs & cleaned but this didnt make a difference. Also tried fresh gas. I vaguely recall chasing the same issue a few years back & a reflash of the firmware fixed it. What are the odds this has happened again that the firmware somehow got corrupt?

[Xenocide]

Flashing firmware isn't going to hurt anything, just make sure you have a backup of your tune and you flash the same version of firmware. There's no good reason for this to be happening though. The EEPROM inside the MS2's processor is non-volatile, it requires exactly zero power to maintain its memory, so leaving it unplugged didn't do anything. EEPROM does have a limited number of writes, but it's incredibly unlikely that you've reached the limit.

I would reflash the firmware, just because it's free and you have had a problem regarding this in the past. If it does work, I'd keep an eye out for a new daughtercard though. Perhaps there's something wonky going on with your EEPROM.

[Nebraska_e28]

Would it be just as good to upgrade to the latest greatest firmwhere? I'm running ms2 extra with 3.2? From about a year ago or so.

\edit

What firmware are you running? How about everyone else on the board?

[Xenocide]

I haven't been in the game recently, planning on doing a little more today, maybe even start

Read the changelogs, often times new versions can break certain features (at least that used to be a problem), which could throw off your tune. I stayed current when I was running it, I think I reflashed to the newest twice without issue.

[marc79euro645]

Don't overlook the basics. I recently spent a week chasing a miss. It turned out to be the coil lead wire to the dizzy was burned underneath where I missed seeing it.
good luck
marc

[Nebraska_e28]

Don't overlook the basics. I recently spent a week chasing a miss. It turned out to be the coil lead wire to the dizzy was burned underneath where I missed seeing it.
good luck
marc

EXACTLY! This ended up not being what occurred to me a couple years back. When I installed the new manifold I didnt put the wire clips on the injectors for ease of removal (just in case). One of the plugs wasnt fully seated. This exemplifies why I should've went with the super eta harness. The push lock clips are soo nice!