Originally Posted by shumby

I am running a stage 1 SC on my 09 G37. I have trashed the upper gears in one trans. But I got a replaceemnt without the upgrades.( Sam did his testing and development on my old trans) And after a reflash the trans has been holding strong with no upgrades. That said i highly recomend getting the trans built because a new trans will run u 10,000 plus. As for motor longevity so far 60000KM on my SC and motor is runnign great I change full moble 1 every 6000km though. Trans cooler and oil cooler is a must in my books too. I am running with a 6.5 psi pully stage on giving me 390+hp to the rear and about 350ish TQ. It is fast reliable and a DD for both me and the wife year round. Love it and fell fully confident about the car and its reliability