Fix the car. The questions you are asking about gauge/no gauge, Do I need a WB or not is just the tip of the iceberg if you continue down the path towards buying and installing any one of these aftermarket ecu's.
I have one. I built the whole thing myself starting with a dozen bags of pieces parts and a circuit board.
In my opinion, putting that thing together was the easy part. Understanding what does what in the tuning process is a whole different ball game. If not for the help of an outside tuner, that freakin thing would still be sitting, un-running.
Keep your life simple. there are way more examples of guys making the stock stuff work on this, and every freakin mustang web forum on this earth.
I have one. I built the whole thing myself starting with a dozen bags of pieces parts and a circuit board.
In my opinion, putting that thing together was the easy part. Understanding what does what in the tuning process is a whole different ball game. If not for the help of an outside tuner, that freakin thing would still be sitting, un-running.
Keep your life simple. there are way more examples of guys making the stock stuff work on this, and every freakin mustang web forum on this earth.