Quote:
Originally Posted by suspectnumber961
Looks like maybe a 2 mpg (6%) gain from just adding a cone filter. I've had this filter laying around for a few years from another car....didn't think it would help since I already had the restrictive cold air intake nozzle removed from the pipe going to the front...and also the resonator box was removed allowing air from under the hood into the filter box.
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What caused the improvement? Removing the cold air inlet? Removing the resonator? Changing from a probably dirty filter to a likely clean filter? A combination of all 3 actions? What?
Quote:
Originally Posted by suspectnumber961
IAT is probably close to the same as before...around 10F higher at 70F...3-4F higher at 90F vs ambient....so it's not likely a warm air issue.
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So.... in other words, you don't know whether IAT has changed.