[mrg666]

This is my third winter with JRSC in upstate NY. I also have the Subaru oem oil regulator installed. Rotrex compressor never gave any trouble. Last winter, I thought, engine tune was causing rough idle at very cold temperatures (around and below 10F). But it was fixed after replacing the MAF sensor. I don't know about the Edelbrock compressor, but supercharged FA20 has no problems. I just use 0w20 oil, warm up the engine only one minute before driving, don't go wot until engine is completely warmed up (with snow tires and icy roads that is rarely possible anyway).