Pros: Added 4 more MPGs in my Altima 2014 2.5. when working on a small car. minuses. A few bolts, washers and nuts were missing (not what you might pay that much for a well known brand). it wasn't difficult to cut and place) So all in all a good horsepower gain, I can feel the response time slightly as the improved MPG also increased with stock usage, I was stuck at around 33.9mpg driving to today and from working 30 miles each way, I was able to get 3-4 mpg more. And really the only reason I gave it 4 stars out of 5 was because of the missing part which thank goodness I could buy at any hardware store.
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