I may try this mod next, as as much as I like FotRS, I got way too good results with torpedoes, even with the duds set to max (650 LotsaDudz).
I'd say about 80% of my torpedoes exploded. It was about 50% when I had 90deg angle of impact, and close to 100% when I had impact about 20-30deg, no matter whether magnetic or pistol.
Mind you, makes for more interesting stories
-smm