Why does my cold air intake make my car super slow?

I bought a cold air intake for my 2015 ford taurus put it on and lost power alot of power. I didn't use the normal air intake tubing i stayed with the tubing that comes in the car and put a filter at the end and reconnected the one sensor. Now my friend did this to his car and it gave him more power i don't know why mine loses power

LOL. CAI's are a MYTH and a total ripoff. You get scammed, brah.

The problem is that all engines are not the same. What works on one is unlikely to work on another. If one KNOWS the stock air intake is the limiting factor (and the throttle body, intake, heads, cam, and exhaust can all flow more than the air intake supports) then obviously you will see gains. That would only apply if you have a wideband o2 sensor and/or the vehicle was tuned with one, as the only gains will be seen under heavy throttle (where you want them, right?) and a narrowband O2 system can't modify fueling properly under those conditions if you have changed air and thus fuel requirements.

The unfortunate FACT is that manufacturers are competing to make as much power (thus efficiency) as possible, and they pay engineers millions of dollars to get the most out of the engines, to include the intake.

The likelihood of some Chinese company turning out a more effective product (that actually makes a difference you can tell, which is normally 10HP or better) is exceptionally small.

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