[Spin55]

Have a 07 335i AT dinan mufflers rest stock. I installed AP tune to aggressive 301 and watched boost from ap from first to second went up to 12.1 then in second once got up 8.5 boost my half engine light came on. 30ff code was present. cleared code tired few more pulls tired few different maps same problem again and again any time boost goes past 8.5 same problem. So opened hood up checked vacum lines around oil filter all looked good. charge pipe was attached well. then were the blow off valves were a hose was dangling loose. Is this supposed to go into the intake mainfold or supposed hang free?

[Patrick303]

I doubt any hoses are supposed to be dangling loose. Is the hose under vacuum when the car is running? Are you sure the vacuum lines are connected to the blowoff/diverter valves?

[Spin55]

i agree yeah the hose coming from the two diverator valves are connected they lead into one hose that is now dangling loose in my car id guess it go into the intake manifold but i have no idea were it connect to. unless it goes somewhere else have no idea

[Patrick303]

That's your problem. You have a vacuum leak and your diverters aren't working properly.

That hose should connect to the port on the underside of the manifold in the back. Can't really see it, but you can probably feel around and find it.

[Spin55]

thanks im trying figure out were to pop it back it.

[E3r2E9r]

There is a nipple on the right side of the throttle body inlet. You can usually judge where it goes by the length of the line.

[Bash]

turn the engine on and feel around, when you get to it, it kinda whistles, i had the same thing found it pretty quick though.

[Velocity26]

When you find the port, and re-attach the line, you might want to add a hose clamp or zip tie to keep it from happening again.