I had a chance to play around with my friend on the way back from a club(don't worry. I was sober. ). We got on the freeway, and the road was pretty clear since it was 2 am.
By the way, he has an Injen intake on his car and had one passenger. I have a Godspeed uppipe, Samco IC hose, and Apexi AVCR @ 1.1, and I had 3 passengers in my car.
Ok, this is how it went down.
First, we went from 80 - 120ish. I heard him downshift(his intake is LOUD), and I downshifted into 4th. By the time I shifted into 5th gear, I was in front of him by like a car length.
We went again from 80 to 120ish. Again, I downshifted after I heard him downshift. but this time, I shifted into 3rd. When I was almost at redline in 4th gear, I was in front of him by like 2-3 car length.
Actually, I was surprised that I was able to catch up and pass him on the freeway. Considering that Celica GTS is known to be faster than a WRX on the freeway stock vs. stock, I'm pretty confident to say that those 3 mods are giving me pretty good power gains. So there you have it! Actual road test of those 3 components. They do work!