Back in the day, I would put a "shift kit" in my GM automatic transmissions. Different springs and such in the valve body would quicken and firm the shifts. I'd like to do the same thing on my 2001 E46 330ci auto trans. The shifts are dreadful, though working properly as far as I can tell. Does such a kit exist? TIA
E46 Auto Trans mod
Jun 04, 2005
1 Replies
Can't answer your question, but it would be more complicated due to the ECU control.
In the UK, one of the BMW tuners certainly offered modified changes for a ZF box.
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