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Old 02-28-2021, 07:21 AM   #3
Scooby Specialist
Member#: 395793
Join Date: Jul 2014
Chapter/Region: Tri-State
Location: SLC and Lake Placid
2005 92x Aero


It really depends on whether the car is set up properly for the BOV or not. If it's been installed correctly and properly tuned for then there isn't much of a need to change it back unless you don't like the sound. Can you go back to the seller and find out who did the install and tune? From there you could research them and see if they have a good reputation or a s*** one. But simply putting a BPV on might introduce a set of problems you haven't thought of.

If it hasn't been tuned for/has a crap tune, then that's bad because the ECU is assuming that airflow is in the intake pre-turbo and it would need to be tuned for. So this leaves you the choice of having it properly tuned by a reputable shop or making changes and still having to take it for a proper tune.

So let's start here. What is the entire mod list for the car? Where was it tuned? Who did the install work?
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