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so i was wondering i changed my plugs and cleaned the intake and was wondering why i see no difference in mpgs from the plugs the old ones were shot, should i reset my computer before i go on a 300 mile round trip tomorrow?
Help me out

Thanks
 

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i changed them a week ago and i bought the ngk v power coppers and they came pre gapped from the factory
I used the ngk 1X iridium with my 2006 3.7l with 54k. Mpg went from 11.7 to 12.9. Not a huge diff, but on these busy, stop and go streets, any increase is better than none. Reset both computer and the mpg readout.
 

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Well, at 15,000 miles a year and 4.15 gas, you saved 494 dollars /year. Not too shabby.
 
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