you guys will need to send your ECU to a Rexxer shop to get them updated to a higher RPM limit.
and probably need the PC V to work the fueling for the higher RPMs as the stock maps wouldn't be built for the higher RPMs
I went the Rexxer route & if you tell them what you want the rev limit raised to & they have mapping made for the higher revs. The Rexxer mapping is great with some slip ons & hi flow air filter your good to go. I'm only talking about raising the limit 1000-1500 rpms max. Anything above that I have no clue.