Food for thought:
Mountune is known for underestimating gains. The MP215 claims +17bhp and +34lb/ft. But their dyno shows +25whp and +36wtq. Has anyone found a dyno from an average person for MP215?
Cobb claims +21% whp and +39% whp with their Stage 3 with 91, but none of the dynos I've seen come close to that.
http://www.cobbtuning.com/Dyno-Database-s/70119.htm. The best I've seen is the Smoking Tire, which got +25whp and +50wtq, but that's only +16% whp and +18%whp.
If mountune says 230bhp and 250lb/ft, I would imagine the gains are bigger than Cobb Stage 3.