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11 Add On Early TPI Emissions Kit……………………………………………………2712 Add On Late Emissions………………………………….………………..………...30LIST OF FIGURESFigure 4.1 Fuel Injection Computer................................................................... 4Figure 4.2 External Coil Distributor Hookup.................................................... 6Figure 4.3 Fuel Pump Relay Connector............................................................. 6Figure 6.3 Assembly Line Diagnostic Link (ALDL) Connector...................…. 11Figure 6.4 Brake Switch………………………………………………………...12Figure 6.5 Neutral Safety Switch……………………………………………….13Figure 6.8 Oxygen Sensor.................................................................................. 14Figure 6.9 Knock Sensor.................................................................................... 15Figure 6.10 TCC Solenoid................................................................................... 15Figure 7.1 Tuned Port Injection System, Right Side......................................... 19Figure 7.2 Tuned Port Injection System, Left Side............................................ 19Figure 7.3 Engine Detail, Right Side................................................................. 20Figure 7.4 MAF Sensor..................................................................................... 20Figure 7.5 Engine Compartment Overview....................................................... 21LIST OF TABLESTable 4.1Compatible Parts..................................................................................7Table 6.1 Sensor and Relay Installation........................................................... 14Table 7.1 GM Tuned Port Injection Engine Group Connections.................... 18Table 9.1 Diagnostic Trouble Codes................................................................ 25LIST OF DIAGRAMSDiagram 2Diagram 3Diagram 4Early TPI Emissions……………………………………………….29Late TPI Emissions………………………………………………..32Brake Switch Relay Connection……………………..……………33ii