Not only that, it's just best practice to learn as much as you can about what you're trying to achieve. that way you will know what results to expect, and how to troubleshoot when something doesn't work as expected.

Personally I never trust the opinion of a single person. Your best bet is to find as much information as possible about the pros and cons and decide if its end result will be meet your goal and expectations. This way you're not stuck in a situation where "so and so said it would work perfectly" and come to find out they already upgraded a fuel preassure regulator and forget to mention it. In result, your car ran too lean and burned a hole through the top of the piston etc etc