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How many MPG with 37s and 4.10 on the new JKU/penstar?

11K views 35 replies 22 participants last post by  monte417  
I have 37s on 4.56 gears and average 13 or so in hilly areas. You can make due with 4.10 but it won't be ideal but also not completely terrible. The new motor makes so much more power you don't have to gear as deep as the 3.8 guys.