Hey guys I have a rev2 turbo I am having problems with my car under boosting I have checked all my intake pipes an I have no leaks an my turbo seems fine.but I have found a cracking on my down pipe where the flange bolts to the turbo could this effect my boosting?

Also I keep getting my oil pressure light come on when my engine is up to temp as soon as I tap the throttle it goes off I have put a brand new oil pump in it an still dose it so I can only think it's the oil pressure sensor.

And help would be amazing cheers.
