Has happened a few times now. 1st or 2nd gear redline WOT then bam it feels like it hits a brick wall by making a big thump then 0 rpms and Christmas tree lights on the dash. Even if I put back into gear it won't restart until I wait a few seconds. Any ideas? I have a Neptune datalog if interested. It runs like a champ at 10 psi other than this. I raced a newer Subie the other day and it stalled as I shifted to 3rd on the highway. I was coasting for a while but finally got it to restart.