I agree, the (stock) low end torque isn't impressive, but they scream from 3.5 to 9k
The tune makes a big different to the low end, then throw in an exhaust and it feels very quick. Slap on a supercharger... and it's a weapon.
A friend had their tune cleared-out by accident and he and his passenger noticed the difference immediately. Highly recommended a tune, I have the customised SBM tune from Andrew @ Southern BM