Thread: L99 vs. LS3
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Old 12-02-2011, 11:11 AM   #10
MyIBMssRS

 
Drives: 10 IBM SS RS/14 1500 Z71
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Quote:
Originally Posted by aet08 View Post
L99 has different lifters for the valves for the active fuel management, it disables 2 of the cylinders when under low load to increase MPG
Active fuel management disables 4 cylinders.
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