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      01-23-2013, 11:37 AM   #5
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Drives: 11" E92 335is
Join Date: Nov 2010
Location: Florida

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2011 BMW 335is  [3.03]
Originally Posted by mdyates View Post
900 miles on my 335IS. Just added JB4 and it is running great until today.. Seems to be slipping at anything over 15psi. Does the DCT break in and grab harder at the 1200 mi mark? Here is a vid:

Break in period on your IS is 1300 miles. The DCT has not fully adapted yet so of course your going to get slippage and a TM error obvioulsy due to overheating from slippage

You shouldnt even be running a tune prior to break in period. Your just making things worse running the tune before break in period.

Even after the break in period you have to "progressively" work the DCT with the increased of power. You just cant install a new tune and then WOT. You will still get slippage. The controller learns and then adapts by applying more bar pressure to clutches to accommodate the power.

For every significant add in power you have to "progressively" work the DCT for it to adapt

This is car is not like an automatic so dont treat it like one
AP-V3 & Cobb Protuned by PTF: (New Times Coming Soon)
RENNtech Tuning: 11.78 ET @ 116 Mph in 1/4 mile YouTube
Dinan Stage 3: 12.5 ET (Best) 111 Mph (Best) in 1/4 mile
400+ launches, 3 Driveshafts, No DCT Slippage, Flash Only
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Last edited by BuraQ; 01-23-2013 at 11:42 AM.
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