My understanding of a throttle body, is to just allow more air flow into your engine. I may be wrong about that, but I would not think that you will have to do anything with your fuel pressure. This will simply allow more air to mix with your fuel, thus giving you more power. These are questions that you could PM the ones that have actually done it. I am sure they will be more than happy to tell you everything you need to know to make the transition complete. Best of luck with this, and it sounds like it will help a lot. From what I read of that thread, they were very happy with the results.