Self-Diagnosis ?Designed for racing the HP Ignition AutoDiag coilpacks are equipped with an additional component visible on the top monitoring the ignition. This permanent monitoring is performed according to well-defined criteria such as the secondary discharge time. When a cylinder encounters ignition issues a red LED is activated on the corresponding coilpack in order to help troubleshooting (defective spark plug for example).When starting the engine all the coilpacks activate their LEDs for 5 seconds then switch off simultaneously confirming the correct operation of the AutoDiag feature. If a coilpack's LED remains on (or comes back on later) it means that the corresponding cylinder is having an ignition issue. HP Ignition AutoDiag coilpacks are ideal for competition where they facilitate technical interventions and maintenance and speed up troubleshooting in the paddocks.HP Ignition Uprated Coilpacks SpecificationsSpecially designed for tuned engines operating at high revs and temperatures the HP Ignition coilpacks offer superior resistance and quality compared to OEM ignition coils. The installation of HP Ignition coilpacks will solve all common ignition problems such as misfires and hesitant performance.The HP Ignition coilpacks provide a gain in horsepower and torque up to 4 % thanks to their high and stable voltage ensuring a powerful spark even at high revs. The installation is totally plug & play without any modifications or adjustments necessary.Comparative Performance GraphComparison carried out by our partner W-Autosport using a bone stock Nissan 200SX S14 with an SR20DET engine.