Maybe what Kleeman does to the ECU only affects it at 100+, but I, and I'm sure many others, will attest to the fact that the change is noticable as soon as the car starts moving.

It is a more pronounced difference in performance at 60 and up.
At least this is the case with the UPsolute chip mod.

Perhaps he meant that on top of the supercharging etc... the ECU mod isn't that noticable, or cost effective.

Matt