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      10-02-2019, 04:30 AM   #2809
RBT-Tuning
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Drives: 335i F31 xDrive
Join Date: Feb 2015
Location: Austria

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Quote:
Originally Posted by Coupes33 View Post
I have xHP Stage 3 tune installed in an upgraded Nizpro transmission. The transmission has performed very well launching in 1st gear at the drags but I would like to be able to launch in 2nd gear so as to eliminate the time lost with the 1st to 2nd gear change. On the 2 occasions that I have attempted a 2nd gear launch in M mode, the transmission automatically changes from 2nd into 3rd at around 3,500 rpm. Is there any way of stopping this from occurring? Log of last attempt is below. Somehow achieved a 11.159s @ 128mph on this run.

https://datazap.me/u/coupes44/datalo...84&tmax=340.46
Thats not something the trans does intentionally..thats a limp error because of internal clutch slip. Not much you can do about that, sorry.