Ok guys, be kind as I'm a bit of a numpty when It comes to this stuff...

I bought a Golf GTi for a steal a few months ago, and when I bought it it just had no guts (Still no guts today).. I had a guy diagnose it through a VAGCOM like device, and it said the N75 valve was shot. Bought a new N75J valve (its all they had in stock in Australia) and fitted it, but no love, it still didn't build boost.

Today I went out to the car to have a look at where to tap into for a Boost Gauge, and found that both the Fuel Pressure Regulator, AND the BOV vacuum lines where just venting atmo... I've hooked them back where they are supposed to go but haven't had a chance to take it for a drive yet.

WHAT ELSE could possibly be the reason that it doesn't build boost? AFM didn't show up on VAGCOM, and I did try taking the vacuum line off the top of the valve which did make the car build boost (didn't floor it of course)

Any idea's??

Kris