Basicly, The Engine Oil Is The First Thing u need to see, what grade u using ? hv u upgrade anything to ur engine beside turbo ? hv u change the piston ? hi or low compression ? dun boost too high if ur piston compression is hi, exp (13.1 > up) hv u change ur ecu cause original ecu will hv the limit and will lock the fuel when reach the limit. add fuel regulator . must hv oil press and oil temp meter with u. that`s my opinion, but the main thing is ur engine oil, becareful not to rev high and remember to change oil whenever its dirty already. scare the conrod bearing will damage.