Splitfire Super Direct Ignition System improves spark performance on your SR20DET motor. This is a newly developed ignition tuning system designed exclusively for the Nissan SR20DET engine. Splitfire enhances the efficiency of combustion to bring more power and torque. This kit comes with replacement Splitfire coil packs, ignition amplifier, and complete plug and play intermediary ignition harness. Works with both S13 and S14 SR20DET motor. Note: This kit DOES NOT replace the OEM ignitor chip.