Is it an on/off solenoid? Is it energized the whole time the car is in the run position?
I think I still have a blow off valve of some sort... can I use that? I'm just worried about it being energized a long time... doesn't that heat up the relay?

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85 190E 2.3(SOLD)
86 230E (-->300D) sold
87 300D (-->300TD) sold
68 250S w/ a 615 and manual tranny (RIP)
87 300TD (SOLD)
95 S280 "The KRAKEN" (Turbo 2.9 602 transplant) traded
86 190E 2.3... current project