My car made 252rwkw tuned, and I was surprised that when I put it back to stock tune it made 227rwkw on the second run. Note, that its manual, and had: Centre muffler removed, F6 CAI, K&N. <------------ I beleive that this alone gives you 20rwkw over stock. A VE Clubcport made 225rwkw stock (not run in yet) on the same day !!!!