Efi live ls tuning

Service technicians have access to the latest vehicle calibrations through an online subscription-based service. This service is limited to flashing on-board modules with the latest GM calibrations. Gen III engine conversions always require calibration changes to a GM calibration, so this service is nothing more than a first step in preparing a PCM for an engine conversion. Unfortunately, service technicians having access to this GM service are often unwilling to use it for an enthusiast because it requires the vehicle to be present for a connection to the OBD-II DLC. EFILive supports 2- and 3-bar MAP sensors and can account for forced induction (boost). The standard 1-bar MAP table (the Volumetric Efficiency table) is limited to a maximum MAP value of 105 kPa. Without the Boost VE table, tuning for a turbo or supercharged engine becomes difficult. TIS2Web requires a J2534 programming interface such as the GM Tech2, Drew Technologies Mongoose cable, or other compatible programming interface. The programming hardware interface is a link between the vehicle's OBD- II diagnostic connector and a laptop or desktop PC. The Tech2 is a powerful handheld device used by GM service technicians for advanced vehicle diagnostics and programming. Note that the Mongoose cannot perform the advanced diagnostic procedures of the Tech2. As an example, someone using an LS1 Corvette engine need not source the PCM directly from a Corvette. A tuner can simply begin with a calibration file pulled from a Corvette PCM, make necessary changes, and then perform a full flash into any PCM with a matching service number. HP Tuners' scan-and-tune package supports both Gen III and Gen IV ECMs and PCMs (bottom). The C.A.T.S. OBD-II Tuner is a tuning package only. Early versions of the C.A.T.S OBD-II Tuner supports the Gen III PCMs, (middle) but not the later Gen IV CAN bus systems. The later version of the C.A.T.S. OBD-II Tuner supports both Gen III and Gen IV ECMs and PCMs (top). Gen III PCM calibration spark parameters are used in the calculation to determine actual spark advance. The PCM determines spark advance by adding, subtracting, or multiplying values with the main spark tables. Although Gen III PCMs are powerful control modules, they are of little use without tuning software tochange engine (and transmission) operating parameters. You may find that the best results involve a blend of tuning services at an experienced dyno facility and final do-it-yourself tweaking using a popular scan-and-tune software package. The aftermarket offers all the tuning tools necessary for a successful LS1 PCM conversion. At best, the new calibration runs your engine as well as it did the previously tuned engine. However, because it is uncommon for one modified engine to be the same as the next, the new calibration may only serve to start the engine so the vehicle can be loaded on a trailer and taken to a local dyno tuning facility for final calibration work. Expect to have the dyno shop make final calibration changes using feedback from a wide-band oxygen (O2) sensor and real-time data from a quality scan tool. This Tech Tip is From the Full Book, HOW TO USE AND UPGRADE TO GM GEN III LS-SERIES POWERTRAIN CONTROL SYSTEMS. For a comprehensive guide on this entire subject you can visit this link: EFILive Scan software allows for customizable maps for logging data. These maps display data in columns, rows, and cells. To build a map, PID choices are available for rows, columns, and cells. Cell values at each row/column intersection may be toggled between averages and operation event counts. To focus on an issue, the table resolution may be defined for both rows and columns. GM repair technicians use a web-based subscription service to access on-board control module calibrations. When an on-board module is replaced during service, the technician uses TIS2Web for service programming. Occasionally, a vehicle may receive a calibration update due to an undesirable performance behavior noted by owners of similar vehicles. EFILive supports the retrieval and clearing of DTCs. This feature is common to OBD-II scan tools found at auto parts stores. Early OBD-I system DTCs could be cleared from memory by disconnecting the battery from the vehicle's wire harness. OBD-II DTCs are cleared through the use of an OBD-II scan tool, not by disconnecting the battery. Here, the PCM calibration is being retrieved and then loaded into EFILive tuning software. The software goes through a series of checks to identify an attached interface cable and determine the readiness of the PCM. Retrieving the calibration stored in the PCM's flash memory takes only a few minutes with a GM PCM and only moments with an upgraded Moates.net emulation PCM. GM's Technical Information System (TIS)—Service Programming System (SPS), (commonly referred to as TIS2Web) is an Internet utility used by service technicians to reprogram control modules with the latest GM calibration. The software is accessed through the Internet and opened as a Java applet launched on the technician's local laptop or desktop PC. Before making changes in tuning software, you should first monitor real-time data while the vehicle is running so the changes are based on actual operating conditions. Some tuning software packages include data acquisition software. EFILive's FlashScan Scan Tool software allows the user to choose standard and GM enhanced parameters (PIDs) for data monitoring and recording (see Chapter 14 for more details on PID selection). EFILive's FlashScan Scan Tool software also includes customizable maps for organizing and analyzing data, diagnostic trouble code retrieval, bi-directional service tests, and more. For TIS2Web on-board programming functions only, General Motors offers a calibration service that does not require an expensive Tech2. The Mongoose cable allows repair facilities to use TIS2Web. EFILive can either update or replace the PCM flash memory. An update is used to make calibration changes only. If the operating system (OS) must be changed (for example throttle type or transmission type), a full flash is required. For Gen III PCMs, once the OS has been flashed into the PCM, only updates are required to finish the calibration work. The EFILive Tuning Tool (commonly referred to as simply EFILive) is one of the more popular software applications for Gen III tuning. Just as any other tuning software, EFILive allows you to "read" the calibration out of the PCM, view and edit a large set of tables and parameters, and "write" the updated calibration back to the PCM. While a Gen III PCM calibration has thousands of tables and parameters, tuning software exposes only a portion of these tables and parameters. The hidden tables and parameters are not necessary for engine conversions. Gen IV ECMs cannot be fully overwritten with custom tuning software. If, for example, you are working with an LS2 engine pulled from a 2005 Pontiac GTO and source an ECM from a 2005 Corvette, the ECM must first be reprogrammed with GM's TIS2Web software using a 2005 GTO VIN. This replaces all calibration segments and turns the ECM into a 2005 GTO ECM. Without reprogramming the ECM with GM's TIS2Web, the GTO pedal assembly would not be compatible with the 2005 Corvette ECM calibration. Gen IV ECMs can only be used with engines equipped with a 58x crankshaft reluctor. This Gen III PCM calibration table represents the main spark advance values when no detonation is present. The PCM switches to an equivalent low-octane spark table when knock is present. The PCM determines which values to use based on engine RPM and calculated airflow. The actual spark advance is based on other spark tables and parameters that take into consideration engine operating conditions such as coolant temperature and intake air temperature. GM Gen III LS PCM/ECM: Tuning Software and Equipment. To reprogram a module, the technician first chooses the vehicle type (year, make, model, engine size). Then the technician enters the vehicle identification number (VIN), which provides a list of on-board modules available for programming. After choosing an on-board module for programming, the technician is prompted to select from among several available calibrations. The calibration data is temporarily downloaded to the local laptop or PC (so that an interruption in Internet service does not interrupt programming) and then the on-board module is programmed.