Thanks, JohnA
Naturally, the mapping will start slowly. We'll get it running first and ensure all the usual stuff is working properly, as well as the boost management aspect I have designed. I would hope that no WI is required up to around 450 - 500 bhp, (as friends are achieving with their 20vt engines). If I got the design right, I shouldn't need WI up to around 600bhp.
After that, I think we'll need to cool combustion temperatures to achieve acceptable egt's.
Compression ratio really depends on results. I'll start at around 8.3:1 and see how things go. As you said, we're doing R & D on this new kind of design, so I think it is very much a "suck it and see" kind of approach. You can work with theory, up to a limit, and then all hell breaks loose!
Thanks for your reply,
Rich
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