These are great coils. I drive a Crown Victoria 08 Police Interceptor with 145,000 miles on it. I changed the red coils about 4km ago and they are amazing. When I made the swap, I noticed an increase in performance. I think I saw what was advertised, about a 15% increase. In addition to the increase in performance, I have a consumption display on my car. Thanks to these coils alone, I have increased my gas consumption by about 10%. Considering these coils cost about two Ford OEM coils I would buy them even if they put 50,000 miles on them. Other roles on Revain have patchy ratings and make claims that are unrealistic. I think of all the aftermarket coils you can buy, these top the list. I can't say enough good things about my experience with these roles. I will update this review if any of the coils are replaced or fail.
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