The other thing is that I don't think a low rpm pump gas engine is all that good of a test bed for this stuff. If I really want to see what is going on I need to build a high rpm screamer and then do some testing. Probably need to build something that has a power peak up around 8000 or 8500 rpm before the power changes start to get bigger. Just not a lot of choices for doing that with a BB Mopar unless I buy a KB block and then get some B1 heads or something like that.