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My VW TDI also has a higher flow EGR with a cooler. I am going to try the same trick I did with the Jeep. Simply disconnecting the vacuum line does not work effectively as the ECU sets the engine light and it seems like driveability is affected. I am going to fake out the MAF input to the ECU so EGR will be disabled without the ECUs intervention. Not to mention alerting the emissions tester. Maybe I'll get a few mpgs as well.
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