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      03-26-2019, 03:33 AM   #1
Aussieatlarge
Second Lieutenant
Australia
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Drives: 2007 e93 335i
Join Date: Dec 2018
Location: Sydney

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Jb4 anti lag and 2 step on auto

Without responding that i should ditch my JB4, can someone please clear this up for me.
Anti lag requires a chip change and a wiring harness change to trick the ecu into believing it is very cold. This retards the timing when the volume button is pressed. It also requires a BEF to adjust the temp tables.

2 step on a manual requires a switch attached to the clutch. On a auto this is not required.

Question. What IS required to make the 2 step work. Ignoring launch, just a noise maker in neutral?
Appreciate 0