Doesn't UPREV allow you to switch to MAP sensors as opposed to MAF sensors? That would probably be the way to go, especially if you are running higher boost.....
I will be exploring this as well
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 2007 350Z NISMO #0618: Zerolift | UPREV | F.I. | Greddy | Competition Clutch | Injector Dynamics | Aeromotive | Pioneer | JL
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