It's very common to just use the regular Blues scale or the Mixolydian scale in funk. I attached a tab of those scales in A. They sound great if you play over a funk groove with an A9 or an A7 chord.
The hard part is of course to make it sound funky. Don't just use one of those scales - you can mix them up so they sound less like scales, and more like music!
My newest tutorials:
Pentatonic Speedster
Funk Lick Library A2
Bat Country
Funk Lick Library A1
Tapping: Level 4
Tapping: Level 3
Alternate Picking: Level 2
Find all of my lessons here:
Complete Lesson Catalog
Pentatonic Speedster
Funk Lick Library A2
Bat Country
Funk Lick Library A1
Tapping: Level 4
Tapping: Level 3
Alternate Picking: Level 2
Find all of my lessons here:
Complete Lesson Catalog