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Engine CID Selected RPM

152 7000 90%

Boost Psi Pressure Ratio CFM Lb/min Trap MPH

5 1.34 371.329 25.993 93.67

6 1.41 390.179 27.313

7 1.48 409.028 28.632

8 1.54 427.877 29.951

9 1.61 446.726 31.271 ET sec

10 1.68 465.575 32.590 14.800

11 1.75 484.425 33.910

12 1.82 503.274 35.229

13 1.88 522.123 36.54914 1.95 540.972 37.868

15 2.02 559.821 39.188

16 2.09 578.671 40.507

17 2.16 597.520 41.826 HP CFM

18 2.22 616.369 43.146 500 830.000

19 2.29 635.218 44.465

20 2.36 654.067 45.785

21 2.43 672.917 47.104

22 2.50 691.766 48.424

23 2.56 710.615 49.743

24 2.63 729.464 51.063

25 2.70 748.313 52.382

26 2.77 767.163 53.701

27 2.84 786.012 55.021

28 2.90 804.861 56.340

29 2.97 823.710 57.660

30 3.04 842.560 58.979

31 3.11 861.409 60.299

32 3.18 880.258 61.618

33 3.24 899.107 62.938

34 3.31 917.956 64.257

35 3.38 936.806 65.576

 Your Traction

Basic Engine Airflow Rate Calculation

HP from Trap

Basic Airflow CFM

277.083

Desired Horsepower

Boosted Engine Airflow Rate

Selected Volumetric Efficiency

Ev %

Car Wei

32

HP from

Car Wei

32

Traction Calculation

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lb/min

19.396

HP

205

HP

195

95.05%

lb/min

58.100

is

Speed Calculation

 to Airflow

  ht in lbs

00

  T Calculation

  ht in lbs

00

 From ET and Trap Speed

* Volumetric Efficiency range in the 95%-99% for modern 4-valve he

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ds, to 88% - 95% for 2-valve designs.

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Editable

514.7

1

1.44

500

12

0.60

60.00

60.00

130

97%

7000

152

43.88

29.18

43.88

0.30

44.18

14.7

0.2014.5

3.05

34.29 Wa

130.00 Tm

Lower RPM Plot Point for Compressor Map Actual Air Mass Flow in lb/min

Intake Manifold Temperature in °F

* Actual atmospheric p

* Inlet pressure depres

 Actual Atmospheric Pressure in psi

Inlet Pressure Depression in psi

Pressure Ratio Calculation

Boost Gauge Pressure in psi * Boost gauge pressur

Choose The Following Parameters

Estimating Requires Air Mass Flow and Boost

* Most common turboc

* Wheel horsepower a

* Best power is usually

Targeted Horsepower at Flywheel

Brake Specific Fuel Consumption

 Actual Air Mass Flow in lb/min

Choose The Following Parameters

* You can convert fro

* Maximum rpm befor

Required Manifold Pressure Required to Me

Your Pressure Ratio is

Intake Manifold Temperature in °F

Volumetric Efficiency % at Peak Power 

* Calculated pressure

Required Actual Air Mass Flow in lb/min

* Intercooler setups ar

* Volumetric Efficiency

 Air Fuel Ratio

Compressor Discharge Pressure Calcula

Required Pressure Ratio for Targeted Horsepo Ambient Air Pressure

* Required manifold pr

* Required boost pres

Engine Speed (RPM)

Choose The Following Parameters

Engine Displacement in Cubic Inches

Manifold Absolute Pressure in psi

Boost Pressure Required in psi

Manifold Absolute Pressure in psi

Pressure Loss in psi

Compressor Discharge Pressure

* Calculated actual air

use this value to plot y

* This can be 1 psi or l

* Required compresso

Pressure LossCompressor Inlet Pressure

Calculated Pressure Ratio

* Pressure loss due to* Compressor Inlet pre

* Calculated pressure

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0.97 VE

4000 N

152.00 Vd

43.88 MAPManifold Absolute Pressure in psi

choose lower RPM val

Volumetric Efficiency % at Peak Power 

Engine Speed (RPM)

Engine Displacement in Cubic Inches

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ressure is the pressure at you current elevation.

sion is the pressure loss caused by air filter.

is the amount of boost you plan on running.

 Pressure

  harged or supercharged engine configurations run in the .55 to .60 BSFC range.

  hieved will depend on how much power is lost through you drive train.

obtained with an air fuel mixture of 11.8 up to 13 on most engines.

liters by multiplying by 61.02

redline.

t the horsepower Target

atio without other variables taken into account.

usually 100 - 130 ° F and non-intercooler 173 - 300 ° F

range in the 95%-99% for modern 4-valve heads, to 88% - 95% for 2-valve designs.

ion

er 

essure to achieve desired horsepower.

ure to achieve desired horsepower.

low to achieve desired horsepower. Use this value to map your first point on the compressor map with r

ur lower RPM point on the compressor map with respect to calculated pressure ratio

ss for a very well designed system and for certain restrictive OEM system 4 psi or greater.

discharge pressure to achieve desired horsepower.

air filter and piping restriction.ssure after estimated pressure loss from air filter and piping.

atio with above variables taken into account.

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e where you would expect to see peak torque

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espect to calculated pressure ratio