Get a real time OBDII scanner and watch engine data, you can rent them or buy them.
They even have bluetooth units now that plug into the OBDII port and send the info to your smart phone, they start at about $15, not sure how much info they show through.
They even have bluetooth units now that plug into the OBDII port and send the info to your smart phone, they start at about $15, not sure how much info they show through.