According to the Aero tool, I should only need 462 horse to get there (stock). I used the following numbers:
Vehicle weight: 1723.7 kg / 3800 lbs
Crr: .02
Cd: .32
A: 2.4 m2 / 25.5 ft2
Fuel energy density (Wh/US gal.): 33557
Engine efficiency: .22
Drivetrain efficiency: .95
Parasitic overhead (Watts): 0
rho: 1.184 kg/m3
Stock they will do 155, drag limited, but with a cold air intake they will do 160 electronically and potentially drag limited. Keep in mind in stock form the turbo runs out of breath (like me running up ten flights of stairs) after 5500 rpm, and that comes on after 140 mph; at that point it isn't making anywhere near 260 horse.
According to my spreadsheet, a stock geared MS3 would be capable of pulling a gear limited 169 MPH @ 6500 RPM (I was previously wrong about being gear limited to 160 in current setup; I am power/drag limited still) with only a slightly bigger turbocharger (at stock boost levels, mind you).
With those stats, it looks like it will need 300 horse to hit 170, and an EFR 6750 would yield about 350 under stock boost levels (15 psi)
Leveraged resources are below:
Gear calc (stock first gen MS3):
https://spreadsheets.google.com/spre...thkey=CI7l3f8J
EFR 6750:
BorgWarner MatchBot
EFR 7670 (what I plan on running):
BorgWarner MatchBot