Turbo lag in 3rd gear, boost at 3k

Louis Scott

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I can hear what sounds like a boost leak coming from the solenoid block, i cant pinpoint any other leak and had a smoke test done. Mpg gone down n loss on power. Done mr muscle on the turbo, actuator works fine, what could it be?
 
Following, have a similar problem with my GTI, smoke test done and new actuator and still persists
 
Hi @Louis Scott - and Audi or a BMW? Assuming Audi - have you checked the DV valve which can split on high mileage or high boost cars - your DV valve, assuming your car has a turbo could be at the front by the radiator or at the back bolted to the turbo.

Give us some more information please...
 
It's a bkd if it's got the solenoid block & the Mr muscle is a waste of time, truly best to remove the turbo strip & clean properly, then retest.

Swap the block if you suspect a leak, check the piping.
 
I have a bkd turbo already cleaned back to metal fully cleaned vanes, for sale, ping me a WhatsApp if interested.

Unless hoses are damaged then see no reason too.
 
Work all over, best to WhatsApp me number in signature.
 

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