Originally Posted by Drawn05
Holy shit, ms109 is pretty good stuff. Smells like satan's piss but certainly is a noticeable power increase. Far from being a cheap option though.
Kenny is correct that you won't really gain much more power with the maps on the piggy's but if you dial in a little more advance/timing with the COBB ATR you could definitely find extra power especially in the midrange.
Have you tried the COBB race map. You should be good for a low 12 with that map on 109.