What Does An AFM Disabler Do And Does It Cause Engine Problems?
using an AFM disabler results in better throttle response, more low-end power, and a diminished risk of damaging the valve ...
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Tech 101: A Warning Regarding GM LS Lifter Guides
The best way to combat this situation would be to purchase only original GM lifter guides that carry the GM part number on the guide. GM part number 12595365 is for production Gen III and non-AFM ...