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All Granatelli does is to buy a generic Delphi sensor and plaster their name plate on them. Nothing special at all, you may as well keep your old sensor. If you want a real upgrade, use a LPE, Abaco 100mm sensor or, use a LS7 MAF in a 100mm tube. I use a Abaco in my supercharged LS7 engine.
It's a great upgrade to make yourself feel good about spending unnecessary money.
If you have a FI vehicle, then it may be necessary if you're maxing out your stock MAF. Otherwise, save your money for other things.
