u seem to be not asking about open source, but freeware... no there is no free tuning, id say the cobb ap lets u change whatever u want, something being open source only means the uncopiled code is available to the public free of charge but most of the time with certain terms of use, but ppl use the term more and more to mean free, when thats not what that means, freeware is a word too u know... as far as open source, if you knew what do with source code for a car tuning app or whatev, i don't think u'd have to ask
hope i wasn't too blunt there, i don't mean to come off rude, but ye, open source vs freeware... two diff things, i don't think anything is ever open source in the car world, cuz every car has its own bs to overcome, even the AP has gone through updates, making source to things like that available would only make more problems than it would solve, since open source alot of times comes with limited support, since most open source projects are done or financed by universities, which by definition make knowledge a public resource
anyways, like i said, hpe