Aftermarket Exhaust; More Power?

[myt]

MYT, does that make things less confusing for you?

But I agree with the idea that gains with the Yaris might be minimal. On previous car I experienced a very noticeable boost across entire power band, even w/o replacing header. But it had about 30 lbs of stock air box and baffles and shit blocking the flow, Yaris does not seem to have that problem.

Yep...LOL FWIW I just wanted to get one that made a little manly noise. LOL I heard that this one wasn't too loud and annoying so I looked into it, but in the ad it said more power and that is what I couldn't understand.

MYT