So I ordered the plumb back V2 EM BOV and installed and now having issues. Under heavy load the BOV works fine, very clean sound. But...trying to drive normal it is annoying. It surges constantly. Light revs, and deacceleration it sounds like a turkey laughing at me. I emailed Turbosmart, told them all of my supporting mods, and this is what they said:
"I had a chat with our engineer about what's happening for you, and we experience the same noise -
We run a tuned Fiesta here as one of our R&D cars, and we have found that there is something in the tune that isn't prompting the ECU to activate the BOV on low / part throttle - I'm not sure what the reason for it is though
The way our EM BOV works is via the solenoid which is activated by the ECU, when activated the piston is all the way open, and when not activated, it is all the way closed, as your valve is activating and working properly at higher load we know for sure that your EM valve is working as it should"
....So once we have our cars tuned this BOV only works for higher boost levels and the rest of the time (part throttle or deacceleration) will be surging? Kind of defeats the purpose of having an electronic BOV. Any thoughts or help? Is there custom tunes that allow this BOV to work when it should?