
At the moment I think they are a definite improvement over Bosch Platinum +4 connectors. It may not be for every car. I have a 1999 Tacoma V6 which I believe is designed to be a poor candidate for a 4 LED connector. In any case, I got a small increase in gas mileage from these plugs (I've been tracking gas mileage). from 2008. The improvement is about 0.5mpg. Not much, but enough to extend the life of these spark plugs). did not fall. I expect them to last longer than platinum connectors since iridium is harder.

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