A hybrid is always a bad choice, you should tune either solely on MAF or MAP. EcuTek and HPTuners can do a speed denisty( aka MAP based tune ) where all three( UpRev, EcuTek, HPTuners ) can do a MAF based tune. The stock MAFs can easily support 500 rwhp. The aftermarket MAFs( especially the AAM Competition and UpRev GT ) can easily support 700+ rwhp. Unless you are in an environment where conditions can drastically or you move around to different locations, a MAF based tune will be just fine.
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