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Discussion Starter #1
How have people found changing the stacks on an e39 m5 once it's charged?

I know people that have tried various ones on n/a cars, some help, some don't, but all could great.

I was wondering what gains people have seen on a supercharged car? Most seem to use basic short stacks. Is it a worth while upgrade or best to leave the stock ones in there?
 

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