Will an extra 20HP make the car "feel" different?

Originally Posted by earwicker7

The guys at the local Nissan dealership said that, as long as they do the install, they could think of one engine boost that wouldn't violate the warranty... the Stillen Stage 3 intake. They said it was close to a 20HP gain for around $750 installed.

My question is how much of a difference this would make in the "feel" of the car. Back in the day, I had an old Porsche that was boosted from 140HP to 210HP (let's just say that the guy who built it was gifted beyond belief) and the 70HP gain turned it into a different car. However, that was a gain of 50%, so you'd expect it to make a difference. If my math is correct, I'd only be looking at a boost of about 6% on the 370Z.

Is this enough of a boost to at least throw me back in the seat a little more? I'm not expecting this to increase the 0-60 by half a second or anything, but it would be nice to feel a bit of a difference when I floor it from a dead stop.