I Think When I Hit The Sport Button Below My Shifter .. I Can Hit A Higher Top Speed..
I Know Regularly.. It Cuts Off Around 135.. With The Speedo Flex Im Sure Its The 130 Mph Cut Off.. Now Im Pretty Sure I Was Over 135 When Racing The Other Day With The Sport Button Lit!!!!
I Could B Wrong.. Im Looking At The Road Not The Speedo .. Sorry For The Caps
Fyi I Checked My Vin I See No 840 Option ;(