Another TuneECU Question

Onlydad said:

Hello, Getting myself oriented here. New to me 09 Touring, New to TuneECU about to DL and install a new map. reading the map descriptions some are "Secondaries removed" others are "Secondaries 100%"
What's the difference?
Secondaries are the second set of butterflies? So I assume they mean fixd open or removed?
Straighten me out here please.
Thanks

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