Clutch slip in low rpm/high gear/high load scenario (with tune)
Thread Starter
Member
Joined: May 2019
Posts: 116
Likes: 28
2014 E63S Wagon
Clutch slip in low rpm/high gear/high load scenario (with tune)
Does anyone else experience this? With my tune, if I stomp it in manual mode in a high gear @ low rpm (e.g., 2k RPM in 7th), there's solid connection for a second, then clutch slips/RPM shoots up ~1k, then solid connection again as the wheels catch up to speed with RPM (all over in a couple seconds).
This does NOT happen when I flash back to stock programming (solid connection the entire time).
Any ideas why this is happening? Too much torque so TCU decides to disengage a bit to protect itself? Or is the torque so high it's literally creating slip mechanically? I really hope not the latter.
Tune is stage 1, theoretically ~660hp/740ftlb at the crank.
This does NOT happen when I flash back to stock programming (solid connection the entire time).
Any ideas why this is happening? Too much torque so TCU decides to disengage a bit to protect itself? Or is the torque so high it's literally creating slip mechanically? I really hope not the latter.
Tune is stage 1, theoretically ~660hp/740ftlb at the crank.
Last edited by amgwagonne; Mar 10, 2020 at 03:57 PM.
Senior Member
Joined: Oct 2018
Posts: 497
Likes: 416
From: NYC
AMG
Might want to contact your tuner and ask if they MIGHT be sending the tcu incorrect tq values from the ecu in order to get around the tq limits, this would decrease line pressure in the trans. But be careful, once a trans starts to slip, its the start of the end. Stay stock until then i would say.
Other items to go down the list for trans would be, trans fluid change/level check, full re-adapation of the trans via benz STAR program/computer.
Other items to go down the list for trans would be, trans fluid change/level check, full re-adapation of the trans via benz STAR program/computer.
Thread Starter
Member
Joined: May 2019
Posts: 116
Likes: 28
2014 E63S Wagon
Might want to contact your tuner and ask if they MIGHT be sending the tcu incorrect tq values from the ecu in order to get around the tq limits, this would decrease line pressure in the trans. But be careful, once a trans starts to slip, its the start of the end. Stay stock until then i would say.
Other items to go down the list for trans would be, trans fluid change/level check, full re-adapation of the trans via benz STAR program/computer.
Other items to go down the list for trans would be, trans fluid change/level check, full re-adapation of the trans via benz STAR program/computer.
