I think the stock Yaris has enough power

[regal]

Originally Posted by posaunemeister

So... I just took my BOMZ CAI with 3" Spectre cone filter out of my Yaris and reinstalled the stock airbox, and needless to say, there was a small yet very noticeable loss of power (according to my butt dyno). .

The butt dyno is about 90% psychological, no way anyone would be able to tell the difference between stock and a CAI if they weren't told what is in the car.


Does anyone have quarter mile time improvements by doing a CAI + Headers + exhaust upgrade ? IME some cars can come down a second or so.