sakimano wrote:Considering the quarter mile for the S6:
1st gear = launch control at 5000+ rpms, grabbing around 4000+ rpms, then run out to to 6500 rpms and shift
2nd gear = 3700-6500 rpm then shift to 3rd
3rd gear = 4200-6500 rpm then shift to 4th
4th gear = 4700-6200 rpm (end 1/4 mile, trapping at 115 mph)
You're using plenty of that powerband where the car acts/behaves like a 500hp car. No wonder it kicked so much ass.
Lets look at 2nd gear alone for fun on the S6 at the start of its engagement in the quarter mile, to half way through the gear, to redline. Assume the Audi supplied dyno curve is accurate, and that on good gas the car is 6% under-rated from the factory numbers (as they've done on the other recently released forced induction cars).
Audi S6 (C7)
At 3700 rpm when second is engaged, the car is making around 430tq/300 horsepower.
At 5000 rpm, about half way through 2nd gear's service in the 1/4 mile, it is making about 430 tq/410 hp
At 6500 rpm it is making about 365tq/450 hp
Now lets look at another '420 hp' car in 2nd in the quarter mile:
Audi RS4 (B7)
At 4500 rpm when second is engaged, the car is making around tq/300 horsepower.
At 6250 rpm, about half way through 2nd gear's service in the 1/4 mile,it is making about 380 hp
At 6500 rpm it is making about 400 hp (peak 420 is made around 500 rpm earlier)
Add to this the fact many think the RS4 is if anything slightly OVER-rated...not underrated...and you can see the gap could be even bigger. This is 2nd gear...where the cars both hit 60 mph...so weight is not much of a factor here on in. The difference is about 300lbs for interests sake.
Considering the RS4 is launching with around 300 tq and the S6 is launching with 430 tq with launch control...and DSG to make shifts INSTANT vs. a 2 to 4 tenths of a second stretch where the RS4 is shifting/not accelerating...then add in the power gap at the various points and the superior curve/work the S6 exhibits, and you have your 6-7 mph difference in trap speed and 6-7 tenths ET difference.