Quote:
Originally Posted by Jedsmom
Can you please explain what this "5-star tune" is? What are the pros and cons?
Thanks.
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MotorHome Magazine did a review that may help answer your question somewhat.
5 Star Tuning Talk - MotorHome Magazine May 2016 - 5 Star Tuning
They got more power and a little improvement in performance, with a slight decrease in fuel economy.
Major disadvantages are more subjective and already covered in other threads.