Reluctor Wheels?
I have never seen any imperical data that proves any advantage or disadvantage of one over the other.

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LS1 PCM's are 24x & the LS2 E40 ECM is 24x and run a 1 pulse per rev cam. From 06 onward GM switched to a 58X crank with 4X cam and in the main an E38 or E67 ECM is required. 06 onward auto trans's will generally only run with a 58x setup: especially the A6.
They stated 58X was needed to meet emissions standards but the 24x is a pretty smart setup anyway but maybe could not meet misfire detection requirements which are tough to meet especially with manual trans'. The 4x cam setup is mainly so they can run VVT cams.






