My friend owns an STI and he uses cobb tunning. We both have the same performance parts done, TBE, test pipe, MBC, short ram intake and i will be putting on the Walbro ful pump. Is Cobb tunning worth it? Or should i drive the couple hours and pay 550 for a tune on a dyno? How much performance will i really gain from the Cobb is my main question and will it make me as reliable as i would be with the dyno tune