Alright your wideband will show air fuel ratios not boost. A wideband is an O2 sensor, not a boost gauge. He probably meant 14 on the wideband NOT 14 psi. If it stayed lower than 14 that means you were likely running close to stoich or a little rich which is alot better than lean.
I'm just going to be strait forward. Before you do ANY work on this car you really really need to learn more about your car. For your own sake you need to sit down for a few weeks and read, read, read. Understand what every part on your engine does first, you need to know that at the least.