Being the indecisive person that I am I cant decide between getting a osiris reflash ($400 basic one) or new gears, I have the 5AT so the 4.0 ones are out of the equation, so my options are

osiris reflash
3.7 gears
swap for 3.5 gears from a MT? will that give me a noticeable difference? I can probably try to do a straight swap for the 3.5 then still get the tune? Does that seem like a good compromise or would i be better off with the 3.7?

 

I would trade for the 3.5 and get the tune