First of all...Happy Birthday my friend! However, I think your perception of an improvement in pickup and mileage is your seat of the pants meter trying to justify the expense as there will be no noticeable increase in acceleration or economy when installing an airbox alone without a tune. They do sound nice though so enjoy the new sound and your perceived increase in performance as perception is reality
Trust me, im the first person to call out someone saying they feel “24hp gain” from a intake. I made a post a few pages back about this and normally its a placebo effect. But there is definitely more of a pick up. Less effort to get up speed and the mds and eco light comes on alot more now and less downshifting since i have the 3.21’s
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