Join Date: Apr 2012
Location: Stratford, Ontario
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They exist... they do prevent the bark you get on letting off, especially when shifting if your truck is stick.
The one I can think of costs $700... Yes the turbo bark does put stress on your turbo, but people aren't regularly blowing the 38's to pieces. Besides you probably have a stock turbo, which you can have rebuild for a couple hundred if it does eventually fail.
The reason BOV's are so expensive for diesels is they must be electronic. A regular BOV or Bypass valve on a gas engine works on the pressure wave from closing the throttle plate. Diesel's don't have a throttle plate therefore a regular one does not work, it will do sweet nothing.
Please check out my 7.3 Enthusiast Facebook group! All are welcome! LINKY