FAQ: BTR- DynoJET Performance

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  BTR Viper Exhaust
  Hennessey Exhaust - K & N Air Systems
BTR Viper exhaust hit 461 horsepower with 500 ft/lb torque.*
 Hennessey hit 444 horsepower with 465 ft/lb torque.*
* Test performed on identical model cars.
Run Name: DYNORUN.003 : 
BASE RUN
Run Date and Time: 3/31/00 2:42:56PM
Acceleration from 2800 to 5800 RPM :
interval = 100RPM
Absolute barometric pressure: 
 29.69 in.Hg.
Vapor Pressure: 0.66 in.Hg.
Intake air temperature: 97.9 F
Gear Ratio: 56.85 RPM/MPH
Correction Factor:  1.03 SAE
RPM Power Torque
2600 N/A N/A
2700 N/A N/A
2800 233.6 438.2
2900 245.5 444.6
3000 253.3 443.5
3100 265.5 449.8
3200 278.3 456.8
3300 289.1 460.1
3400 301.2 465.3
3500 313.7 470.8
3600 326.5 476.3
3700 339.7 482.2
3800 350.6 484.6
3900 357.5 481.5
4000 366.4 481.1
4100 378.9 485.3
4200 392.9 491.3
4300 406.6 496.6
4400 418.1 499.0
4500 426.6 497.9
4600 433.7 495.2
4700 439.7 491.3
4800 445.4 487.3
4900 450.0 482.4
5000 454.0 476.9
5100 456.1 469.7
5200 458.0 462.6
5300 460.3 456.1
5400 460.5 447.9
5500 458.0 437.4
5600 456.5 428.2
5700 465.7 420.8
5800 N/A N/A
Column Max: 460.5 499.0
Column Min: 233.6 420.8
Column Average: 379.1 468.8