06MonteSS wrote:you would have to get a custom tune done for it in order to have the necessary trouble codes disabled.. http://www.diablewtune.com/package_deals.html

Actually I was mistaken. I don't have to delete any o2 just need to do the normal tune shit. Can I do so with the trinity??

as long as you remember to restore the original backup stock tune to the truck first before going to a dealer, you'll be fine.. they can't tell what was changed..

BUT..

you're in a catch-22 if you do long tube headers.. because you will HAVE to have a tune in order to have necessary trouble ...

Soooo I have a 2014 GMC Sierra reg cab 5.3 flex fuel and am running e85 and planning on doing long tubes. The trinity interests me because I'll be able to tune for these mods (correct me if I'm wrong) but I am extremely concerned about my warranty. I only have 15000 miles.
Will the tuner void my ...