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Recs on giving 2018 JLU I4 more power

921 views 1 reply 2 participants last post by  Lee H 
#1 ·
Is there anything thats not a tune that provides a some horsepower gain for my weak 4 cylinder?
 
#2 ·
Your biggest band for the buck to pep that thing up is going to be regearing.
 
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