Materie

Did you feed the reactor Deuterium first? What kind of power source did you use? Provide more information, and it will be easier to find an answer.

They removed it because it's no longer being maintained. Which means they needed to remake whatever was useful in other packs, and that's what's happened.

Wiring? Just use the universal cable.

Both pumps and pipes are there, they simply aren't the same pipes and pumps as before. Look around a bit before jumping to conclusions. You could've even searched for the words "pump" and "pipe" to find them. Both are part of Mekanism. Electric Pump and Mechanical Pipe.