Ok here goes. Hi all my names Quinn I'm new to this forum and new to the whole concept of forum please excuses me for any misplaced questions/posted, spelling(I'm no academic) and my lack of knowledge with this car. Thanks right I've just brought a 2001 golf gti 1.8 turbo it has a aum engine 187000 on the clock a boost gauge fitted and a dump valve a rubbish paint job but a cheap price
So when I brought the car from Birmingham and drove it home it was sluggish only boosted at 4psi and the oil pressure warning popped up once. I got home have been trying to get it running right for the time being I found a split pipe under the inlet (one that goes from inlet towards oil filter) replaced that. The boost gauge was not fitted correctly so sorted that and it's running a dump valve which I'm told is a no no lol but no choice at the moment. I brought a vagcom thingy it had 11 engine codes cleared them nothing's come back on. It know boosts a 10psi but drops up the rev range?

I've checked all pipes etc bit lost really any way I'm sure with some time a persistence ill sort that.
So moving on my plan is to buy another aum block and rebuild that then a head for it rebuild that too. So my question is if any is kind enough to help me what can I upgrade in the engine and head for more power or to handle more power ie crack shaft camshafts etc and where can I get it from kind regards Quinn again I apologise for any wrong doings also my other car is a rx8 which I've done the same project with but I couldn't look to the forums for help really as there are alot of guys out the who don't know **** about the rx8 engine and advise you to do things that aren't good so the rx8 had to be done the extremely hard way which took me six and a half years to source parts and info or things plus save a buy them (alot of wasted money and trail and error) many thanks guys any interest and help would be great !!!!!!!!