[Mk2] [Turbo] cracked down pipe effect boost?

[ath16]

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.

[fingers99]

Cracked downpipe will play havoc with the lambda readings leading to incorrect fuelling. This is much more important than worries about boost!

For the oil pressure, try a new switch -- your guess is as good as mine.

[ath16]

The cracks dose run literally past the lambda an it has a brand new oil pump on it so the only thing I can think is the sensor. Cheers for the reply

[Draven]

Cracked downpipe will play havoc with the lambda readings leading to incorrect fuelling. This is much more important than worries about boost!

For the oil pressure, try a new switch -- your guess is as good as mine.

+1 what he said

[greeny]

The ecu only uses the lambda sensor in closed loop, under boost it doesn't make any difference.

[Peter Gidden]

The ecu only uses the lambda sensor in closed loop, under boost it doesn't make any difference.

I am having problems with my car under boosting.

What problems?