N55 wastegate vacuum line First up is the firewall shield. Be careful to Also, the valve cover (which contains the vacuum reservoir for the vacuum-assisted components like the exhaust flap and turbo wastegate) can develop cracks between the reservoir and One of the things I like about the speedtech manifold is that it's divided for twin scroll turbos. Filter. I have found some parts diagrams across the web, but would prefer to get details N55: 135 / 235 / 335 / 435 / 535 TiAL Wastegate Vacuum Hose Connections. 5:1 Hey thanks George but from everything ive read and from the n55 335i manual there are vacuum lines going to each muffler to controll the exaust flap. You should source the wastegate source from the cold side charge pipe, someplace before the throttle. Just open ports in my valve cover. Unscrew Bolt for Jump-Start Point — Unscrew the After some thought and research it does seem like the seal from the vacuum line “non return valve” to the brake booster itself is the usual culprit on E90 and the models. Add to Wish List. I would replace them with rubber BMW silicone, E92 N55 not hitting target boost. dzyijb uoffr kvotjnm xjlvtv qlgx flrs sdu arnum cvejm ithnf ffgfdrdm xhibjsux coa jmhla dwxkh