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E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio - General Forum
The E9X is the latest evolution of the BMW 3 series including the highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! Post questions about "upgrading" from your current E46 here or jump over to E90Fanatics.com!

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Old 12-12-2013, 03:31 AM   #1
Registered User
Join Date: Aug 2013
Location: germany ( us army)
Posts: 97
My Ride: 2009 E-92 335i
Vacuum line leading to throttle body.....

Ok I just got done cleaning my intake valves and I started tinkering with my intake set up and recirculation set up. I noticed the line that connects the recirculation valves to the throttle body and decided to disconnect it just to see what happens (note that I have not driven with it removed, I only parked it and revved the engine a little bit) I noticed that it sounded more aggressive than what it already does which was a huge reason why I am asking this and when I let the revs drop it sounded as if my recirc's were now acting as atmospherical BOV's. Please help me with this by telling me if I can disconnect and drive or shouldn't disconnect the line.

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jamesT335I is offline   Reply With Quote
Old 12-12-2013, 09:54 AM   #2
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Join Date: Apr 2004
Location: Atlanta
Posts: 329
My Ride: e92 335i
Don't disconnect the line, all you've done is create a boost leak.
atinybug is offline   Reply With Quote

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