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Registered for this forum just to reply to this thread. First of all, thanks for all the information. Couple questions.
My Car:
335i 2007 Manual 108k miles
DCI, Borla Cat-back, and just added a Cobb tune
Symptoms:
Before I put the tune on, it would throw a 30FF if I did an extended pull on the highway(15 seconds or so). Now that I've upped the boost, it seems to fail around 13PSI consistently. But it builds to 13 very quickly. Only getting code 30FF.
I replaced the lines from the brake booster line over the intake to the vacuum canisters on the passenger side. If I take one of these vacuum lines off and apply pressure to the system, should it hold the pressure? Right now it slowly leaks down as I apply pressure. I have silicone lines on order to do the rest of them, just waiting for it to arrive and wanted to know if there was a way to test if they are leaking while I wait.
Anything else obvious I should check? The brake booster holds vacuum for a few hours after I park, and the lines over the intake were really shitty.
Thanks again.
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