Digital temp mod

That's what the second loop with the needle valve is for. Basically you set that as your low/pilot light. When the pid opens the solenoid it just increases the gas already going to the burner instead of having a burner and pilot light. Thusly, removing the delay and making sure all ports burn at the same time. Unless you have easy access to the water heater I wouldn't waste your time. They have solenoids new on Amazon for $15. Guessing you'll have to order the other parts (pid and shutoff) you'll hit free shipping at $25. Looking at ordering everything as well to build mine. Under $100 for new.