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Mrev is for 6mt's only, someone correct me if I'm wrong
Kinda, its only needed for 05-07 revup motors which are found in the 6mts for those years. 03-04 do not need the mrev regardless of transmission as they didn't have revup motors
Mrev has been a bit confusing to me. I know that when they upgraded the motors from a 04 to 05 model the lower plenum's volume was increases, thus giving 298hp instead of 280. Is this what is called the MREV?