I recently bought an 07 kawasaki ZX-14. The owner had two identical bikes. One was wrecked(no wiring harness), the other had a blown engine. He took the engine from the wrecked one, slapped it into the good frame. Now I have it, and it doesn't want to start. It turns over. Everything looks in good working order. The previous owner says that the ECU needs to be flashed. But before I pay EVEN MORE money, is this really the solution? Please help me.