Most of these videos don't capture the actual sound of the PE/similar set ups well. The bass seems to be absent and the pops are very 'tinny'. Check out the two below, best examples I have found online that sound similar.
Personally I love the backfires the PE adds. It sounds exotic at WOT, upshift, and it cracks going into the next gear (sounds AGGRESSIVE). At mid range RPM, let of the throttle and it burbles, not cracks, down the rev range. Enough to draw attention, not enough to be obnoxious. PE > Golf tee 300%.
Part 2 has nothing sound related once the music starts though.