(On a side note, haven't really been posting much, been too busy playing, having so much fun with this game!)
I know Peter/Shneeb has written about ForzaTune in the past, wanted to let y'all know that ForzaTune 6 is now out! Costs a couple of bucks and is available for both iOS and Android, links to the respective stores from here: http://forzatune.com The new version supports dry, rain, and drift tunes.
I've only used it a couple of times so far for low-tier tunes and found it to be an excellent shortcut to a great base tune for dry races. Doesn't take too much time to look up the numbers it needs and do the necessary adjustments, then go play!