Problem with locking 3rd gear when on dyno
Thread Starter
MBWorld Fanatic!
Joined: Dec 2005
Posts: 2,347
Likes: 1
From: So Cal
2006 Weistec 3.0L SC'd C55, 2006 MaxPsi PT6466 Turbo'd M3, 2019 Maserati GTS , 2020Alfa Quadrifoglio
Problem with locking 3rd gear when on dyno
Can someone tell me how to lock up my third gear when doing a dyno? My Supercharged C55 keeps downshifting into second whenever the tuner stomps on the gas in 3rd gear?
Is there a dyno mode in the 2006 C55 and if so how can I activate it?
Is there a dyno mode in the 2006 C55 and if so how can I activate it?
Member
Joined: Feb 2006
Posts: 81
Likes: 0
yeah put ignition into position 1, with your display on the milage screen push the reset button on your cluster 3 times, it should come up with the screen UB: 13.4 or something, then push the down buttons on your steering wheel unitl it comes up with the dyno test function push the + and start your engine. be careful if trying on the road as disables all traction and ABS systems apparently. To re-activate, turn off engine and leave and then turn back on.
