3.0cs/CSI Brake Booster Install

BinksE9

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Greetings to all,

I have worked on a few restores and repairs of CSI's and CS's lately including replacement of the brake booster. I have always installed them with the vacuum port on the bottom. In the last couple of weeks I have seen a CSI with the port on the top and a CSL with the port on the bottom. Both cars had the same M90 motors. I would like to ask if a car was being "judged" what would be the correct orientation.

Thanks in advance for your answers,
BinksE9, Ed
 

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