do the search function, basically if the dealer (or you) put in 87 octane the computer does not seem to be able to LEARN once the 91 or 93 octane is used, it stays defaulted to the low octane table and you get lower performance. Mine and others on this site were slow to the point of us questioning whether to trade/ sell. If you pull the 5 and 20 fuse, in the fuse box in the engine compartment for at least one hour, the computer resets to the high octane table, and POWER is AMAZING!!!!!!!
V-8 only.
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