hi guys, recently bought my 55plate ST, this is my first turbo car and dont really know much about turbos etc, ive have a read through the idiots guide section and a few threads and think im starting to get the hang of it abit, but..ive noticed on my ST recently when i floor it the turbo guage needle only goes up to just past half way, and it doesn't really seem to pull as hard through all the gears, also it seems that the internal dump valve is alot louder, either that or something is making a similar noise when i change gear, is this normal?
also could someone confirm what the oil pressure guage's normal behaviour should be please?
sorry to be such a newbie, as i said ive looked through some threads and can't find much matching up to what im describing. cheers