[mgarblik]

Does the engine run the same, (bog), no matter what the temperature is? Trying to figure out if closed/open look has anything to do with the bog. Basically cold, open loop, fuel delivery is primarily determined by MAF, temperature of water and air and throttle position. Once in closed loop, (warm), the front O2 sensors become the primary inputs for fuel delivery, but the other sensors are still used for fuel trim. If it runs the same cold and hot, (open and closed loop), again the MAF comes into question. You will get it!