I'll read your reply tonight when I have time. Go back to post 27 and re-read where I quoted you. I think you accidentally got words crossed up. I think I have a pretty good understanding of effective compression ratio. What you wrote in the quote had me scratching my head.
Also don't take this wrong but I think we might be to the point of hijacking this thread. I share in the blame for this. Hope the OP is getting his engine run on problem figured out.