I don't see this as being much of a problem myself. It's pretty easy to ignore the older portions of the thread and focus only on the new content. Perhaps a more clear indication of the portions of the thread that are more than a year old would be helpful, different color, etc. The older content however should definitely remain, as it provides helpful ideas for folks looking for car-repair help here.
Towards solving @korares problem, the VSA dash warning light isn't the problem, that's just to tell you the engine is not running correctly, and you already know that. If the variable valve timing function (vtech) is not working properly, these symptoms could be expected. If your shop diagnosis says the vtech pressure switch is the problem, that's probably the best next step. It may well solve the problem completely.
fyi, Variable valve timing means when the intake and exhaust valves open and close is changed depending upon engine rpm and engine load. Older vehicles the valves always open and close at the same time. Modulating the opening and closing time, that's done in newer cars to improve engine performance and mpg. The downside is, if that function fails, it will make the engine run poorly, or not at all.