Stock guts I understand.I had a xrTURBO with same mods it made 325 rwkw with 15psi. the tuner detuned it 2 313rwkw he was concerned that the motor might let go.I will ask you this my F6 had 3800 km on her & then got tuned people tell me once she s around 10,000ks the KW will go up on it own. True or just bullsh*t