Found 2 more videos on my HDD and combined them into one.
[video=youtube_share;rRw_oyIKewU]http://youtu.be/rRw_oyIKewU[/video]
As you can see - Corsa is NOT pulling away. And now, with the Clio 200 gearbox, I have an even faster car in the rolling start that I had in 2009. This Corsa in the video has/had an intake/exhaust and a remap.
I will try and find another one willing to race now and see the difference.
However, I do understand what you're saying Willis - I have that "problem" with my friends Polo 1.8T GTI.
We have more or less the same PEAK bhp but the difference @ 4krpm is stunning and he starts pulling away immediately. Here is our old dyno (at the same day):
And here's how it looks now (he installed a bigger IC in the meanwhile and now there isn't any loss of power at high revs because of the intake temperature):
[video=youtube_share;wG3nDNJweOQ]http://youtu.be/wG3nDNJweOQ[/video]
He is MUCH faster and has <10bhp (didn't do dyno with the IC) more and ~40kg less (has an LPG installation too) than my Clio.