That is F'ing ridiculus. Even if the shop had a full out brake dyno and did a complete step run, at $100 and hour that would allow for 10 hours of mapping and if it takes them 10 hours to map with the right dyno, they are just guess and changing sitting verse seeing it, finding the proper area and then fine tuning.
Now if they are using a typical DynoJEt and doing sweep test, then such test never give the right details on information to fine tune a EFI right. So they may take 10 hours for they just basically would run a quick sweep, take a wild ass guess, run another sweep, more guessing and keep dicking with it until they get the HP they want and it is not total shit.
$1000 is BS and though I can not say how they come up with that figure, it is so shit for mapping that I would not even waste the time to ask anymore.
Based on the news I saw yesterday concerning HD laying off allot and missing predictions, the shop may be better to stop stealing from customers and get back to the basic and not just robbing folks blind.