Re: New SVT owner here.
You are better off buying the MAF kit that doesn't have a chip included, putting on all your mods (include the pulley), and then tuning the truck on a dyno and having a chip. The chip that comes with the power package doesn't take into account your 4# pulley upgrade or other mods you might do. Also, each vehicle can turn out slightly different, even with the same mods, so dyno tuning is always the best way to go.
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