I've never known to feel a difference on a low comp car vs std comp...Euan's old 550bhp, his was 6.2:1 and he swore it drove as well as it did off boost as it did when it was standard
Same as the old "oh huge intercoolers an it'll be laggy/unresponsive"
I never noticed any difference whatesoever when I doubled the size of my apexi intercooler on my 200sx...
Think people jus mump their gums for the sake of it half the time when 9 times out of 10 they've never tested their theory's!