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I recently got my Subaru tuned and while tuning the guy told me that there seems to be some sort of boost leak or something because the car wasn't boosting the proper amount. He had told me that the car should be overboosting right now because he set it to max but it wasn't. Any idea what the issue could be? The car definitely gained power from the tune but it just wasn't the correct amount. He actually left the tune on the car and said once I get it sorted, the car will overboost and then I should come back to him and get it tuned again.

I have tried the Boost Solenoid and it seems to be working perfectly fine... Theres no other signs of a Boost Leak?
 

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Possible causes of low boost pressure can be broken hoses, contamination build-up within the turbine or compressor areas, leaking seals, damaged shaft bearings, the wastegate sticking open or operating incorrectly, a leak in the intercooler, a blocked air filter, a damaged diesel particle filter, or a damaged catalytic ...
 
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