I have been having the death whine for a couple weeks now, started about 4 weeks ago after a trip to the drag strip. took it in to mitsu and their tech said he couldnt recreate the sound. so i went to pick the car up and i made it two miles from the dealer and the sound came right back. i took it back and had the service manager take it out and he said that sound is normal on evos. i found that kinda hard to believe since it had just started 3 weeks before that, and it NEVER used to make that sound at 55+. a week later i was out at Big Valley Performance in tampa and had one of their techs take it out, and he said it was def my transfer case going bad. so i opened a claim with mitsubishi of north america and am currently waiting on the florida tech to be in my area (tuesday). i have been driving the car a lot because it is my DD, and the sound has been getting worse (used to only do it above 55, but now starts at 30, 40 and 60+). But the problem is for the last 2 days i havent been able to recreate the sound. i will take the car all the way up to 75-80 and no whine anymore. ive tried searching for a cause but found nothing on the sound actually going AWAY. anyone have an idea why it would suddenly disappear? or if it really was the transfer case to begin with?

 

Just launch it till it snaps, then take it in.

 

^
lol that also works!