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Granatelli Mass Air or Hypertech Programmer?
Im in a pickle. Lately i have been looking at the hypertech power programmer III for my 5.3L Silverado. Right now i have a K&N intake and a magnaflow catback. I wanted to do the programmer and a mass air flow sensor but hypertech just said that they tune for mostly stock engines and modifications like a air flow sensor will hurt the engine. I dont wanna be done modifying after the programmer. Any Suggestions? Anyone have a Granatelli mass air flow sensor? is it good? Power gains noticeable? Thanks,
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2001 Silverado Z-71
-K&N 77 Series Intake
-Magnaflow Dual Catback
-JL Stealth Box w/ 12" JL Sub
-Billet Bowtie
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