im not sure exactly the amount of hours spent on fixing my car, because i was not there. but my bill was more than $400 than what I planned for. So wether that was not enough still, im not sure, but that is almost double the cost of my original bill. That $400 is for making a cai a short ram intake, and putting clamps on the the intake to avoid collapsing. The diagnosing of the front 02 sensor came afterwards, never found out what really happened, and I still paid over $200 for a diagnostic that was never clear. Thank god I didnt go and buy a brand new ecu though. Not complaining to SR or Scott, but I definetely paid my dues. Still paying them actually, but for different reasons.