08 CTT zero boost

[redzero]

hi all.

after a night of wot I suddenly lost boost

I have zero boost with this faults  p1248 , P0299 , P1080        2008 cayenne  turbo

if I clear the codes p1248 shows then the rest show up later when I drive

 

I changed both diverter valves one was not sealing I changed driver side turbo to intercooler Oring 3oz of oil 

 

still no boost ?

 

 

[redzero]

just saw a nice video in YouTube

 

can a leak like this cause zero boost

 

 

[lewisweller]

Short answer is probably not zero boost but definitely much reduced. If the MAP sensor is disconnected or not working at all this will give you Absolutely no boost. 

Smoke test the intake by removing the map sensor on top of the intake Y pipe and smoke test it. Some home made smoker ideas are on YouTube. You have to disconnect the air box pipes and bag them closed to hold the smoke inside the intake areas which would normally be under boost. 

Check your Diverter valves as well and vacuum pipes to them are air tight if you blow.

I posted my DV and pipe fix on here. Search my posts. Good luck