H3LPME Posted February 27, 2022 Share Posted February 27, 2022 (edited) Hey guys. have a ZF6 in a 4WD, what I’m trying to do is improve engine braking - mainly on slow, steep technical descents, but aswell as long windy mountain road descents too and also prevent up-shifting in Manual shift. figuring the best what to do so is torque converter lockup, but what specific tables should I be looking at? Thanks Edited February 27, 2022 by H3LPME Quote Link to comment Share on other sites More sharing options...
hjtrbo Posted February 28, 2022 Share Posted February 28, 2022 1 Quote Link to comment Share on other sites More sharing options...
BeerTurbo Posted February 28, 2022 Share Posted February 28, 2022 3 hours ago, H3LPME said: Hey guys. have a ZF6 in a 4WD, what I’m trying to do is improve engine braking - mainly on slow, steep technical descents, but aswell as long windy mountain road descents too and also prevent up-shifting in Manual shift. figuring the best what to do so is torque converter lockup, but what specific tables should I be looking at? Thanks open the transmission maps, go to shift map 27. in the downshift area of the map change the last number to the same as the rest. In my case i also let the car upshift itself, so i dont accidently tag limiter. see below std vs what im talking about. 2 Quote Link to comment Share on other sites More sharing options...
H3LPME Posted February 28, 2022 Author Share Posted February 28, 2022 Thanks guys have had a bit of a play, will do some driving then fiddle some more. Cheers! Quote Link to comment Share on other sites More sharing options...
H3LPME Posted March 2, 2022 Author Share Posted March 2, 2022 In regards to torque converter lockup, is it locked up until the OSS is reached? I raised the numbers, and lowered numbers but didn’t really feel a dramatic difference between the two, not sure if it’s just the heavy vehicle or I’m doing something wrong? Quote Link to comment Share on other sites More sharing options...
hjtrbo Posted March 2, 2022 Share Posted March 2, 2022 If you're on the right table and logging the right ZF DMR's you will see your changes. As you're chasing decel, you need to hit the unlock part of the TCC tables. Lower numbers will keep it locked up for longer. Post a log chief, will make it heaps easier to help. Quote Link to comment Share on other sites More sharing options...
H3LPME Posted March 7, 2022 Author Share Posted March 7, 2022 On 3/2/2022 at 9:50 PM, hjtrbo said: If you're on the right table and logging the right ZF DMR's you will see your changes. As you're chasing decel, you need to hit the unlock part of the TCC tables. Lower numbers will keep it locked up for longer. Post a log chief, will make it heaps easier to help. Thanks for your help, ended up figuring it out after borrowing a laptop and datalogging on the fly. Quote Link to comment Share on other sites More sharing options...
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