Texas Speed & Performance LS1 Cylinder Head Upgrade - Big Power Small Change
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The remaining hardware, including the throttle cable, fuel-injector harness connector, fuel line, drive belt, air-lid assembly, and strut-tower bracket, was installed. The petcock on the radiator was closed and a fresh fill of Dexcool was added. After a careful check of the completed installation, the battery was connected. Before the T/A could be started, Brian Lohse adjusted the factory computer tune with HP Tuners VCM Suite and scaled the F.A.S.T. injectors to the LS1 fuel pressure of 58 psi in the "flow rate versus KPA" table. According to Lohse, "Scaling the injectors anytime that an injector and lb/hr rating is changed is absolutely critical before the car is started. Without scaling the injectors for the increased fuel supply, the engine would idle excessively rich. If driven, fuel washing past the piston rings could cause ring and/or bore problems in a very short time." View Related Article
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