Precision-turbo-and-engine BigStuff3 GEN3 PRO SEFI (LS1) System Hardware & User Manual

GEN3 PRO SEFI System (LS1) System Hardware Installation & BigComm Software User Instruction Manual Revision 1.0

BigStuff3 Pro SEFI System (LS1) Version 1.0 9 Harness Label Wire Color/Connector Type Label Definition Connect To Further Details LS1 Coils Ground

BigStuff3 Pro SEFI System (LS1) Version 1.0 99 Once the “Default Dash” has been saved, individual dash’s can be changed and saved again as part of

BigStuff3 Pro SEFI System (LS1) Version 1.0 100 71. Load From File In addition to the “Default Dash” unique dash’s can be configured and used, e.g

BigStuff3 Pro SEFI System (LS1) Version 1.0 101 Select “Yes”. The screen below will open. All the previously saved log files will be listed. Sel

BigStuff3 Pro SEFI System (LS1) Version 1.0 102 Release the left mouse button and the following screen will open. Name the Dash to be saved in

BigStuff3 Pro SEFI System (LS1) Version 1.0 103 73. Logging (External) As an option, the GEN3 ECU is capable of supporting both internal (internal

BigStuff3 Pro SEFI System (LS1) Version 1.0 104 • Record Log – Starts logging data. • View Log From File - View logged data from a user defined f

BigStuff3 Pro SEFI System (LS1) Version 1.0 105 automatically include number extensions for all subsequently saved files under the same default fil

BigStuff3 Pro SEFI System (LS1) Version 1.0 106 An example log screen is shown below. In this example, the Log Window Dashboard was setup to col

BigStuff3 Pro SEFI System (LS1) Version 1.0 107 The user can also “zoom- in” on a particular area of the logged data in the graph. To “zoom- in”

BigStuff3 Pro SEFI System (LS1) Version 1.0 108 The left and right arrow keys on the keyboard can be used to move the red cursor line to display

BigStuff3 Pro SEFI System (LS1) Version 1.0 10 Tach (Tachometer) – Green Wire This wire supplies a generic Tach “out” signal and will drive most t

BigStuff3 Pro SEFI System (LS1) Version 1.0 109 12. Select the TPS Threshold (0 – 100% TPS), Log for (0 – 30 seconds) & Update Data While Loggi

BigStuff3 Pro SEFI System (LS1) Version 1.0 110 78. Replay (Optional Feature) The GEN3 ECU’s optional internal data logging capability is called “

BigStuff3 Pro SEFI System (LS1) Version 1.0 111 Signals Displayed – Select the signals you would like logged and displayed by checking the box ne

BigStuff3 Pro SEFI System (LS1) Version 1.0 112 Once 100% of the data has been transferred, a file is automatically written to the folder BigComm

BigStuff3 Pro SEFI System (LS1) Version 1.0 113 Release the mouse button and the screen below will open showing the available Replay logged files.

BigStuff3 Pro SEFI System (LS1) Version 1.0 114 The “Choose a Log File Screen” (shown above) will open and display the available, previously logg

BigStuff3 Pro SEFI System (LS1) Version 1.0 115 A Blue Ellipse will appear along the trace line highlighting the logged engine operating points.

BigStuff3 Pro SEFI System (LS1) Version 1.0 116 • Fill – Choosing “Fill” will open a secondary drop down- screen which allows the selected cells

BigStuff3 Pro SEFI System (LS1) Version 1.0 117 The following screen will appear. Name the file, in this example Norwalk Calibration-2, and hit

BigStuff3 Pro SEFI System (LS1) Version 1.0 118 The following screen will appear listing all the available calibration files. In this example, onl

BigStuff3 Pro SEFI System (LS1) Version 1.0 11 Fan Control (engine cooling fan) – (Single lead Packard connector with a single red wire) This te

BigStuff3 Pro SEFI System (LS1) Version 1.0 119 86. Transmission (Optional Feature – Available August 2004) Gear Box Select the type of transmi

BigStuff3 Pro SEFI System (LS1) Version 1.0 120 Torque Converter Delay (in seconds) – Once all other criteria are met the delay setting determines

BigStuff3 Pro SEFI System (LS1) Version 1.0 121 91. ECU Pin-out ECU Pin Wire Name ECU Pin Wire Name ECU Pin Wire Name A1 Map Signal - B A2 TCC/For

BigStuff3 Pro SEFI System (LS1) Version 1.0 12 Positive and Negative Battery Connections – (Four (4) 3/8” ring terminals. Two (2) red wire terminal

BigStuff3 Pro SEFI System (LS1) Version 1.0 13 H20 – (Black, 2-way Packard connector) This connector mates with a GM style coolant temperature sen

BigStuff3 Pro SEFI System (LS1) Version 1.0 14 LS1 TPS Connector Pin-Out Goes To Late Model GM or Ford TPS Connector Pin-Out A 5 Volt Reference C

BigStuff3 Pro SEFI System (LS1) Version 1.0 15 Connect the LS1 Coils Odd connector to the ignition coil pack connector on the odd fire (1-3-5-7) ba

BigStuff3 Pro SEFI System (LS1) Version 1.0 16 5. Injector Harness Installation – [Black, 10-way Packard Connectors (Male & Female)] Once the

BigStuff3 Pro SEFI System (LS1) Version 1.0 17 The WBO2 sensor threads into the sensor mounting bung [(optional) (see picture below)], which needs

BigStuff3 Pro SEFI System (LS1) Version 1.0 18 7. ECU Installation The ECU must be installed in the passenger compartment! The ECU has four ¼-20

BigStuff 3 Pro SEFI System (LS1) Version 1.1 1 Table of Contents Section Page(s) Hyperlink 1 Introduction 2 2 Features 3 3 Package Contents 5

BigStuff3 Pro SEFI System (LS1) Version 1.0 19 Engine calibrations are best performed on a dynamometer. If the user elects to calibrate the engine

BigStuff3 Pro SEFI System (LS1) Version 1.0 20 The following screen will automatically open. Click the left mouse button on Next>. The fol

BigStuff3 Pro SEFI System (LS1) Version 1.0 21 Click the left mouse button on Next>. The following screen will open. Click the left mouse b

BigStuff3 Pro SEFI System (LS1) Version 1.0 22 Once 100% is reached, the following screen will open. To launch the BigComm software, check the

BigStuff3 Pro SEFI System (LS1) Version 1.0 23 appears. Drag the BigComm shortcut icon onto the desktop. The BigComm icon allows for quick access

BigStuff3 Pro SEFI System (LS1) Version 1.0 24 pin-to-9 pin serial adapters are readily available at Radio Shack or comparable stores. Radio Shack

BigStuff3 Pro SEFI System (LS1) Version 1.0 25 Select another Com Port until an available port is identified. Once the PC identifies an availabl

BigStuff3 Pro SEFI System (LS1) Version 1.0 26 If the GEN3 ECU is not powered up (the ignition key is not in the “Run” position

BigStuff3 Pro SEFI System (LS1) Version 1.0 27 Left mouse click on Yes and the BigComm software should go to the BigComm folder. If the PC does

BigStuff3 Pro SEFI System (LS1) Version 1.0 28 12. Establishing a Connection The sequence for connecting the GEN3 ECU to the Main Wire Harness is

BigStuff 3 Pro SEFI System (LS1) Version 1.1 2 Table of Contents Continued Chapter Page(s) Hyperlink 52 MAP AE Inc Rate 79 MAP_AE_Inc_Rat

BigStuff3 Pro SEFI System (LS1) Version 1.0 29 13. BigComm Main Menu Screen The engine is not yet ready to be started. A few additional ite

BigStuff3 Pro SEFI System (LS1) Version 1.0 30 16. Configuration The BigStuff3 ECU needs to be configured to the engine it will control. For exam

BigStuff3 Pro SEFI System (LS1) Version 1.0 31 Main Configuration Table The Hardware Configuration’s Main Configuration table is relatively self

BigStuff3 Pro SEFI System (LS1) Version 1.0 32 18. Operating Configuration (F5 – “Quick Key”) Next, the system “Operating Configuration” needs to

BigStuff3 Pro SEFI System (LS1) Version 1.0 33 TPS Configuration This input screen allows the user to set: • The TPS sensor to the correct out

BigStuff3 Pro SEFI System (LS1) Version 1.0 34 RPM inputs, so that the engine has a small band (hysteresis) between the rev limiter on and off limi

BigStuff3 Pro SEFI System (LS1) Version 1.0 35 Crank Shaft (Pulse/rev) This input screen allows the user to set the quantity of teeth on the crank

BigStuff3 Pro SEFI System (LS1) Version 1.0 36 Setting the LS1 Crank Reference Now that TDC for the number one (1) cylinder (compression) has been

BigStuff3 Pro SEFI System (LS1) Version 1.0 37 • Rotate the crankshaft back to 30o • Very slowly, rotate the crankshaft clockwise towards TDC.

BigStuff3 Pro SEFI System (LS1) Version 1.0 38 An example of a default table, supplied with the system, is shown below. This is the same table

BigStuff 3 Pro SEFI System (LS1) Version 1.1 3 2. GEN3 PRO SEFI System Standard Features • Configurable Load & RPM axes to enable optimizat

BigStuff3 Pro SEFI System (LS1) Version 1.0 39 20. Load vs. RPM The BigStuff3 GEN3 SEFI system offers configurable Load & RPM axes! This fe

BigStuff3 Pro SEFI System (LS1) Version 1.0 40 This feature allows the user to configure the X axis (RPM) and Y Axis (Load), so that a majority

BigStuff3 Pro SEFI System (LS1) Version 1.0 41 “Scaled” RPM inputs from this table define the RPM break points used in the following tables, to

BigStuff3 Pro SEFI System (LS1) Version 1.0 42 The following table offers default Load schedules for 1, 2, 3, & 5 BAR MAP sensor applications.

BigStuff3 Pro SEFI System (LS1) Version 1.0 43 21. Firing Order Once the Load and RPM axes have been configured, go back to the Configuration on t

BigStuff3 Pro SEFI System (LS1) Version 1.0 44 The purpose of this table is to allow the user to configure the ECU to maintain a constant injecto

BigStuff3 Pro SEFI System (LS1) Version 1.0 45 Note: The RPM values, at the bottom of the table, are from the Load vs. RPM Axis drop down accessib

BigStuff3 Pro SEFI System (LS1) Version 1.0 46 You have now reached a milestone! The following necessary tasks have been completed: • The BigC

BigStuff3 Pro SEFI System (LS1) Version 1.0 47 24. AIR FUEL RATIO (F11 – (“Quick Key”) 25. Air Fuel Ratio Table Note: In most cases, the E

BigStuff3 Pro SEFI System (LS1) Version 1.0 48 • Fill – Choosing “Fill” will open a secondary drop down- screen which allows the selected cells

BigStuff 3 Pro SEFI System (LS1) Version 1.1 4 GEN3 PRO SEFI System Optional Features • Transmission control (optional) for GM 4L60E/80E transmi

BigStuff3 Pro SEFI System (LS1) Version 1.0 49 Cell Values Selected in a Column13131413.9Interpolated Result from Cell Values Selected Above 1313.3

BigStuff3 Pro SEFI System (LS1) Version 1.0 50 Normally Aspirated Street Engine 13.1 13.1 13.1 13.1 13.1 13.1 13.1 13.1 13.1 13.1 13.1 13.1 13.1

BigStuff3 Pro SEFI System (LS1) Version 1.0 51 Turbocharged Engine (30 PSI) 13.1 13.1 13.1 11.5 11.5 11.5 11.5 11.5 11.5 11.5 11.5 11.5 11.5 11.5

BigStuff3 Pro SEFI System (LS1) Version 1.0 52 corresponds to the bottom row in the air/fuel ratio table and the cell all the way to the right corr

BigStuff3 Pro SEFI System (LS1) Version 1.0 53 28. View Lambda (F2 – “Quick Key”) The View Lambda allows the user to view the current Lambda sta

BigStuff3 Pro SEFI System (LS1) Version 1.0 54 29. AFR Parameters (F11 – “Quick Key”) The Air/Fuel Ratio (AFR) Parameters table allows the user to

BigStuff3 Pro SEFI System (LS1) Version 1.0 55 30. SPARK (F4 – “Quick Key”) There are several ways to access the base Spark table. The quickest

BigStuff3 Pro SEFI System (LS1) Version 1.0 56 31. Spark Table The Spark table uses actual timing values in each of the 256 cells in the table.

BigStuff3 Pro SEFI System (LS1) Version 1.0 57 • Fill – Choosing “Fill” will open a secondary drop down- screen which allows the selected cells

BigStuff3 Pro SEFI System (LS1) Version 1.0 58 Cell Values Selected in a Column27.830.53233Interpolated Result from Cell Values Selected Above 27.8

BigStuff3 Pro SEFI System (LS1) Version 1.0 5 3. Package Contents The BigStuff Engine Management System includes the following components: • Bla

BigStuff3 Pro SEFI System (LS1) Version 1.0 59 32. FUEL (F3 – “Quick Key”) There are several ways to access the base Fuel table. The quicke

BigStuff3 Pro SEFI System (LS1) Version 1.0 60 Using the PC’s mouse, keep the left mouse button depressed and slide the mouse pointer down until

BigStuff3 Pro SEFI System (LS1) Version 1.0 61 The Fuel table uses Volumetric Efficiency (VE) values in each of the 256 cells in the table. Volume

BigStuff3 Pro SEFI System (LS1) Version 1.0 62 • Interpolate – If a series of cells in the same row are selected and the “Interpolate” “cell-fill”

BigStuff3 Pro SEFI System (LS1) Version 1.0 63 The illustration below shows the areas of the base fuel map that the ECU accesses under different d

BigStuff3 Pro SEFI System (LS1) Version 1.0 64 The sequence of events the ECU steps through during an engine “start” are defined, in order, in t

BigStuff3 Pro SEFI System (LS1) Version 1.0 65 While the engine is cranking, a “real-time Ellipse” will move within the Cranking table relative t

BigStuff3 Pro SEFI System (LS1) Version 1.0 66 37. After Start Correction As outlined above, the ECU delays the introduction of After Start Corr

BigStuff3 Pro SEFI System (LS1) Version 1.0 67 38. After Start Decay The After Start Correction fuel being added by the ECU during an engine sta

BigStuff3 Pro SEFI System (LS1) Version 1.0 68 39. Idle The “Idle” drop down offers the user five tables to calibrate the engine idle quality.

BigStuff3 Pro SEFI System (LS1) Version 1.0 6 4. Main Wire Harness Installation To improve the overall wire harness installation process, the har

BigStuff3 Pro SEFI System (LS1) Version 1.0 69 40. Throttle Follower Throttle bodies used with electronic fuel injection systems have an air by-pa

BigStuff3 Pro SEFI System (LS1) Version 1.0 70 41. Desired Idle RPM The Desired Idle Rpm table allows the user to set the desired engine RPM as a

BigStuff3 Pro SEFI System (LS1) Version 1.0 71 The bi-directional input table allows the user to quickly advance the timing (left side of the inpu

BigStuff3 Pro SEFI System (LS1) Version 1.0 72 The “position” values shown in the table below can be used as a baseline for most applications. You

BigStuff3 Pro SEFI System (LS1) Version 1.0 73 45. Warm Up Before the engine reaches normal operating temperature, i.e. 180o 46. Air Temperature

BigStuff3 Pro SEFI System (LS1) Version 1.0 74 The inputs shown in the table below can be used as a baseline. 47. MAP Vs. Coolant

BigStuff3 Pro SEFI System (LS1) Version 1.0 75 Same screen as above with the window maximized. The values shown in the table below can be used a

BigStuff3 Pro SEFI System (LS1) Version 1.0 76 MAP Transient Fuel: MAP (+) Transient Fuel can be compared to a carburetor’s power valve. It is u

BigStuff3 Pro SEFI System (LS1) Version 1.0 77 To change a value in the dMAP Correction table, move the cursor using the PC’s mouse or arrow keys

BigStuff3 Pro SEFI System (LS1) Version 1.0 78 Same screen as above with the window maximized. 51. MAP AE Decay Rate The third table is MAP

BigStuff3 Pro SEFI System (LS1) Version 1.0 7 Harness Label Wire Color/Connector Type Label Definition Connect To Further Details Calport Black 3-

BigStuff3 Pro SEFI System (LS1) Version 1.0 79 dMAP Correction will decrease 1 step. This 3 interrupt for 1 step process continues until the dMAP

BigStuff3 Pro SEFI System (LS1) Version 1.0 80 While the engine is running, a “real-time Ellipse” will move within the MAP AE Inc Rate table relat

BigStuff3 Pro SEFI System (LS1) Version 1.0 81 To change a value in the Run Time Correction table, move the cursor using the PC’s mouse or arrow ke

BigStuff3 Pro SEFI System (LS1) Version 1.0 82 falling below a MAP value of 30 kPa, with the throttle closed. The Base Fuel Map pulse width is turn

BigStuff3 Pro SEFI System (LS1) Version 1.0 83 relative to a rate of throttle change (dTPSdt). The asynchronous pulse can be modified relative to t

BigStuff3 Pro SEFI System (LS1) Version 1.0 84 56. AE Position Correction The second TPS transient fuel control table is AE Position Correction.

BigStuff3 Pro SEFI System (LS1) Version 1.0 85 57. Individual Cylinder This feature allows the user to define the amount of fuel (positive and n

BigStuff3 Pro SEFI System (LS1) Version 1.0 86 58. Individual Cylinder - Spark The fixed inputs in the table below represent the firing order con

BigStuff3 Pro SEFI System (LS1) Version 1.0 87 60. Boost The GEN3 ECU allows the user to control boost parameters. Two boost strategies can be

BigStuff3 Pro SEFI System (LS1) Version 1.0 88 Keep the left mouse button depressed and slide the mouse pointer down until “Boost Parameters” is

BigStuff3 Pro SEFI System (LS1) Version 1.0 8 Harness Label Wire Color/Connector Type Label Definition Connect To Further Details Boost Black 4-wa

BigStuff3 Pro SEFI System (LS1) Version 1.0 89 Staged mode turns on boost stages (solenoid valves) in a user defined, time sequence. PWM mode assu

BigStuff3 Pro SEFI System (LS1) Version 1.0 90 Same as screen above with window maximized. To change a value in the Boost PWM table, move the

BigStuff3 Pro SEFI System (LS1) Version 1.0 91 the Timer Enable pin, which is Pin A of the 4-way Boost connector on the main wire harness Boost_Con

BigStuff3 Pro SEFI System (LS1) Version 1.0 92 How to Use With Stick Shift Cars - For stick shift cars, the ignition timing needs to be retarded in

BigStuff3 Pro SEFI System (LS1) Version 1.0 93 65. Learning The primary function of the Learning feature is to minimize the amount of O2 correctio

BigStuff3 Pro SEFI System (LS1) Version 1.0 94 Enable/Disable Learning - To enable or disable Learning, left mouse click the appropriate button.

BigStuff3 Pro SEFI System (LS1) Version 1.0 95 When the user defined delay limit is reached, the active cell (the cell the engine is operating in

BigStuff3 Pro SEFI System (LS1) Version 1.0 96 Release the left mouse button. The screen below will open. Left Click on the “Pic

BigStuff3 Pro SEFI System (LS1) Version 1.0 97 After selecting a Dash to configure, “Signals” need to be selected and added to the Dash. After t

BigStuff3 Pro SEFI System (LS1) Version 1.0 98 In the screen print below notice that the same “Signals” appear in the Dash at the bottom of the C