Strange shifting after headers
Thread Starter
Junior Member
Joined: Nov 2014
Posts: 17
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2009 C63, 2007 650I, 2014 F350
Strange shifting after headers
After having long tubes installed about a month ago, I have been experiencing some odd shifting. In auto/sport mode, when tipping in the throttle quickly from slow speeds, the tranny will upshift momentarily before downshifting. It doesn't happen every time, but often enough to be annoying. Consequently, it seems like the throttle response is delayed and I have to get somewhat further into the pedal for the car to downshift and start pulling.
Any ideas?
Kleemann LTH, OE stage 2, ROW boxes w/AFE filters
Any ideas?
Kleemann LTH, OE stage 2, ROW boxes w/AFE filters
Last edited by str8six; Jan 1, 2015 at 04:06 AM.
Senior Member
Joined: Jun 2014
Posts: 408
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From: North of Pittsburgh PA
Ford Truck, 2014 C63 AMG 507
Try reseting the MCT TCU.
Here is a recent thread describing how.
https://mbworld.org/forums/c63-amg-w...tcu-reset.html
Here is a recent thread describing how.
https://mbworld.org/forums/c63-amg-w...tcu-reset.html
Senior Member
Joined: May 2014
Posts: 276
Likes: 0
From: BayArea, CA
2010 c63 (p31) w/LSD
agreed try resetting the transmission (takes 5 mins) and I bet that resolves the issue. These transmissions work great after a reset but as they "learn" they become slow and dumb. That reminds me I should probably reset mine again!
