2D is amazing

[chucktoo]

Great to have the Forum back - it is truely a great source of information.

Living Boston we have had some very cold weather lately sub zero f has been common.

I have a 2005 Subaru Outback XT with dual 2D systems each one supply in a 1.0 mm jet installed exit of my intercooler.

I am running 1/3 methanol and 2/3 water which should be good to less than -15F - it has not gotten that cold.

My HSVs [ 2 of them ] and manifold pressure switch and water manifold are mounted under the windshiled wiper cowel - where the wiper motor is - lots of room but no heat.

This morning ~5F the manifold pressure switch froze ON and the 2D were running all the time matching the pulses from the fuel injectors instead of turning on at 13 psi manifold pressure.

The amazing thing is the car started just fine and ran just fine .

The proportional control of the 2D works real real well.

Later in the day the pressure switch thawed out and all was back to normal.

Any ideas how to prevent this freeze up again other than the obvious move the switch to a warmer place ?