Excellent read on why torque at the engine is less than at the wheels (opposite of whp)...
http://danielmiessler.com/study/horsepower/
Oh and with upgraded turbos if you just manage to extend/hold boost longer to say 6500rpm instead of ~5600rpm-5800rpm which seems to be peak whp on stockers you can really see how much an organic clutch will hold in terms of whp, so same torque as before but held longer...example:
On stock turbos say you hold 400wtq at 5600rpm :
Whp = (400 * 5600)/5252 = 426whp
Now, imagine you upgrade turbos and now can extend that same torque curve by 1000rpm, here's what you get:
Whp = (400 * 6600)/5252 = 502whp
This is why clutches are rated for torque holding capacity and not whp (hp is calculated based on RPMs)...
So, theoretically speaking, on N54s with a top RPM of 7000rpm, if you managed to tune your car to hold ACT's claimed organic disc holding power of 456tq what does that mean in terms of PEAK whp possible on their organic on this TUNE:
Whp = (456 * 7000)/5252 = 607whp
Now all we need to do is find means of shifting the torque curve
In all honesty I don't think these numbers are realistic but I wouldn't be worried about this ACT clutch even with a 35 nitrous shot....launching hard a lot will destroy any clutch prematurely...
I'll report back on the ACT clutch as soon as I'm through my break in..