Over/Under Boost Codes
#3
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#7
Sounds like the boost fooler fouled up the MAP sensor. Not sure how though. But it would be a start. If you got a local Cummins shop, be a good spot to pick up a MAP sensor. I do believe you only need a boost fooler if your running a stock turbo w/ an electronic waste gate. BTW, did they send a pigtail to plug into where the waste gate use to?
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