Toyota Repair: 02 Tacoma no engine power after battery change, boost gauge, battery change

Question
Truck is an 02' Tacoma, 3.4 ltr, Supercharged, auto with approx. 130k miles. Check engine light has been on for quite sometime for bad O2 sensor. Last Friday p.m. it requred a jump start due to the original battery going bad. Replaced battery Saturday a.m. After changing the battery, the truck has no engine power and will not accelerate. The supercharger is winding up and the boost gauge indicates full boost, but the engine just bogs down. While in park, it hesitates then throttles up. In gear it will not rapidly accelerate, instead it acts as though it doesn't know what to do with the fuel it is getting. The only code remains the O2 sensor code. When driving the tach does not slip like a trans problem, and their is no smell of raw fuel. Fuel pressure after the filter is 38 psi at idle, and it comes up proportianally with acceleration, but the engine does not. When accelerating from a stop, the engine bogs down. If the gas peddle is feathered, it will attempt to accelerate, but once on the interstate it will do no more than 63 mph at approx 2000 rpm. Did I possibly fry the computer during the battery change?

Answer
Hi Don, It is hard to say. you have to scan the engine and look at the live data and look for abnormality. It is possible to have ECU problem. find friend with same truck and try to switch the computers for testing. Just ground yourself before handling the ECU.