I thought about the golf tee mod, but I don't think it's necessary, because when I cold-start my car, the flap will close and then reopen in about a minute (at this point I do not know if it closes off again while I'm driving, but everytime I get out of the car to check, it's in the open position). When I hot-start the car, the flap never closes while in idle. My conclusion: if the flap remains open all the time, except during the first minute of starting the engine, there is no reason to do the golf tee mod. :iono:
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