I my mind, when the flapper motor needs to be replaced, you can buy the tune for less then 1/2 the cost of fixing the flapper motor. It eliminates the flapper motor and all associated error codes from the program. Just clean up the mess left behind by the EGR system and block it off.

I have a GDE tune in the ML with the 642 v6. Smoother, more power, same economy as far as I can tell.

__________________
Greg
2012 S350 BlueTEC 4Matic
2007 ML 320 CDI
2007 Leisure Travel Serenity
2006 Sprinter 432k
2005 E320 CDI
1998 SLK230 (teal)
1998 SLK230 (silver)
1996 E300D 99k, 30k on WVO
Previous:
1983 240D, on WVO
1982 300D, on WVO
1983 300CD, on WVO
1986 300SDL 237k, 25k on WVO (Deerslayer)
1991 350SDL 249k, 56k on WVO - Retired to a car spa in Phoenix
1983 380 SEC w/603 diesel, 8k on WVO
1996 E300D 351k, 177k on WVO