I've fitted new turbos recently and have been told that the wastegate actuators are set to open at 12psi. How should I run vacuum lines so that they work correctly? The factory setup with the boost control solenoids and restrictors in place will bleed off some of the boost back into the vacuum under certain conditions and therefore limit the signal received by the wastegate actuators when these conditions are present. Like this diagram. So perhaps it may be best to keep the solenoids in place so that boost can be recycled under certain conditions for safety reasons? To do this I'd need to find the restrictors and squeeze them into my new vac lines correct? I can't just connect a new vac lines with no restrictor in it or otherwise all the boost will be leaking back into the vacuum correct? And lastly.. if I remove the solenoid completely, the wastegate actuator will always open at 12psi of boost regardless of conditions (cold engine, etc.) I don't have an EBC at this point in time, although I am looking to get one in the future. So how should I set this up to run properly?
Are you serious, Piss all that crap off, restrictors all of it. and run a hose straight to the actuators from a manual ball and spring controller if you are not having an electronic one. The manual ones are about $30 The stock soleniods are for safety boost only and have NO active part in controlling the boost level after warm up in a correctly running car. Just keep your foot off the accelerator while the engine is cold and make sure the system has NO air leaks. Its the restrictors that control boost level normally and do a pretty piss poor job even when its working 100% correctly. If you are anal about knowing when the ECU is trying to apply safety boost. Run an LED to the safety boot soleniod connector so you know what the ECU is trying to do.
