Yo EFI live!

Is there anywhere/anyone who provide CAX upgrades for a fee on my file so I can continue tuning as I make hard part changes? I'm looking to get past the 3800RPM hard limiter. I've been researching for a while and it looks like CAX file changes are the only way to get past this. If there are other options please clue me in as I'm hoping to avoid a 5.9 PCM swap.

Thanks!
Nick