and my previous answer assumes your brother's new purchase has the Whipple Stage 1 kit for 2017-2019 Raptors which is what this thread is about.
thanks for the replies, il let him know. these trucks can take e85 but not more than 50 percent mix with 91 but i have the tune for that which makes the difference , the 91 map feels alot less powerfull. but i beleive its stage 1 i didnt know theres different stages, as you said it comes with their own intercooler and airbox i was curious how it was tuned since most of the tunes need a tool or software to be able to do it. but i got the point hes going to have to get used to it lol and get updates whenever they come out.
thank you