GM LS1, LS6 750cc Canadian Performance Injection 1998 2004 GM LS1 LS6 EFI Harness Part No 60508 Painless Performance Coil Pro Power Series GM LS1 Ls6 Engines Red 1997 2004 GM Cars W Vin G S 1998 2006 GM Trucks W Vin E D (8Th Digit) Additional 2 Pin Connector MSD Ignition Ls1 ls6 ecu pcm pinout blue red green wiring help standalone Artofit 1998 2004 GM LS1 LS6 EFI Harness Part No 60508 Painless Performance. MSD's engineering team has been working diligently the past year to improve our Multiple Spark Coils for the GM LS engine platform. The coils fit in place of the OEM coils yet are capable of delivering higher spark energy to the plugs, topped with multiple sparks at idle rpm. Increased spark energy and voltage, along with multiple spark capabilities, help improve the combustion process of the fuel mixture to create an efficient burn. This results in improved throttle response, smooth idle and quick starts, plus increased high rpm performance! Connector and Plug Wire on the same side. The 2 pin connector must be plugged into the coil. If not, the coil will not operate. This additional connector is for optional ignition timing control. 3 times the current of stock coils Improved high rpm operation Multiple Sparks at idle RPM Details: Emission Code: 1 Engine: GM Gen III IV (LS) Mounting Hardware Included: No Quantity: Single Terminal Gender: Male Terminal Quantity: 2. 0 Warranty: Manufacturer's Limited 1 Year Warranty