Ok, so looking at the gt35r map,
And the 62-1 I am running,
it bothers me that there was a surge. It seams more likely that it was blowing out the spark. I am also running the .63 a/r hotside. I see 15psi by 3500rpm. I also have stock head, cam, and intake manifold minus the 60mm tb. Phil should have a better flowing motor that should be less likely to induce a compressor surge when compared to mine. I see no reason why BigPhil would be surging.
Basically I am saying I think Phil should swap the housings back and see if he can gain some spool.