I have tein springs and some jap shocks and my car is very very stiff just ask anyone who has been for a ride in it.
the best i have managed to run so far is 14.2 with a 2.1 60ft @ 159km/h that was with around 145rwkw.
This is with 205 compliance tires but with a 50 profile tire and i let the pressure down, i didn't have any wheel spin i took of at 5000-5500rpm and bogged down
All you need is a set of tires with high a profile.
Just for a comparison my mate with a R32 gtst with around 160-170rwkw ran 13.3 on street tires with a 1.8 60 ft and he took off at around 6000rpm.
And the HICAS thing i am pretty sure is a fuse because when i pulled my hicas fuse i lost power stearing and the light came on.