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Valon007 Valon007 is offline
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Join Date: Dec 2018
Car: BMW M4
Default Exhaust valves on JB4 M4 Problems - 12-10-2018, 11:41 AM


I have an M4 2015" with Jb4, xpipe and an Lightweight Titanium Exhaust on.
(The Jb4 and the exhaust were from a Friend, he had it only 2 Weeks in his car M4 2016)

I made both mods together and my valves are now constant open, I tried to close them with the BC Fonction, but I have no reaction. Nothing happens.

The valves on my stock exhaust were working on changing to sport or sport +.

Can anybody help me please?
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