It stops the vacuum from reaching the wastegate. I just used the term "modifies" because u can adjust boost settings. A wastegate needs pressure to open and close its opening. Without a source of vacuum, the wastegate will not open and you'll over boost. A boost controller stops vacuum flow until a given point, then releases so that the wastegate can receive the vacuum and open, releasing exhaust gas.
Manual boost controllers have a reputation for losing their boost settings and often failing. Even the expensive ones sometimes fail. An electronic boost controller is better because the valve is controlled electronically making it less prone to failure.
Last edited by Madisonr34 : 10-01-2008 at 03:16 PM.
|
