What he's trying to say is that a canned tune is just that, its canned. One basic tune to fit everyones needs. Well as you know on these engines just because my engine can drop to a 3.4" pulley with the same mods doesn't mean yours can as well. Basicly a canned tune will work but it will be far from ideal. Many people here run them so its not like your going to **** up anything by doing it. Get an Aeroforce gauge so you can monitor kr and thats going to be your best mod.