Try -1+5 for your gearing, or -2+2. Theyre about the same and I think its an awesome setup. I know a lot of guys that are much faster than I am on here running that gearing. PCV v PCIII is a difference of features. The PCV has a better tuning resolution and a bunch of neat features i.e. tune by gear, by cylinder, dual maps and a bunch of other things that go way over your average users head. The nice part is the additions for it, you dont need a control hub or anything. It is a nice little piece, doesnt need a 9V to function either. The question is more about is it worth getting a newer piece over what you have, and that depends on what youre going to do with it.
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