The dragstrip dyno says my car is making 440 horses at the crank on a tune alone....and a mild tune for 91 fuel. So, in theory, not 400 wheel but, enough for an 11 sec 1/4 on a fully loaded car.
Dynos may tell you one thing but the real world may tell you a lot different. Can you get a dyno to tell you that you have 400 wheel on a tune and axlebacks? Sure. Test it out at the track and prove it. You might find that more difficult.
I've smoked many of the "400+ wheel" tune 5.0s at the strip...on ET and mph so caveat emptor if you're just trying to hit a number on the rollers, you might not be getting what you are paying for.
2014 Premium GT, SGM, Brembo, Auto, Tech, Comfort, etc. GT500s, Steeda UCA, VMP auto tune, 100 shot on BBR tune, best et: 11.38 at 120.85
2012 GT, Candy Red, Brembo, 3.73, Tech, Comfort, etc. Procal tune, Roush upper, UMI LCAs, Steeda red bracket, GT500s, 28X10X16 Hoosier slicks, best et: 11.91 at 115.23 RIP