dear john!

i am having a big problem since after damage my car in flood, it is a toyota yaris triptronic 2005 , the car got flood water atleast 3hours so ,i just brought to the in my garage drain all the water got dry everything.dryed the ECU Engine Change the oil and filter car was driving alright just had a test drive about 10minutes that car transmission has stop working and wont drive anymore.just towed back to garage checked all around just realise about the ECU for transmission had abit moistured and dryed reset by computer there is no trouble code but she is not changing any gear at all there is a misfiring in cylnder 1 got replaced the injectors but still having same misfiring though as soon im giving by pass power to injector one its go back normal.The dash has shown the stop sign as well.checked all around so far every thing seems to be clear. please give me an advise about my car.