Fits select Nissan models including CA18, SR18, CG13/10DE, SR20, RB20, RB25, RB26, VQ20/25/30, VG30, both turbo and naturally aspirated engines. Compatible with Subaru EJ20 engines. Fits Mitsubishi models with 4G63, 4G93, 4G92, 6A12, 6A13, 6G72 engines. Compatible with Mazda 13B, 13B-REW, B6-ZE, 13BT, both turbo and naturally aspirated engines. Fits Toyota models with 4AGE, 4AGZE, 4AFE, 2EET, 4EFTE, 3SGTE, 3SGE, 1ZZFE, 2ZZFE, 1GGTE, 2JZGTE, 7MGT engines. Prevents engine over-revving by cutting ignition and producing exhaust flame effect. Features multiple flame modes, including strobe flame option. Constructed with ABS plastic housing. . Flame effect operation: - Warm up the vehicle for at least 10 minutes; ensure exhaust pipe is dry. - Accelerate engine speed to 3500–6500 RPM, press and hold the switch while applying one-third to half throttle (approximately half a second). Monitor RPM drop from 6500 RPM. Once flame sound is heard, release the switch and maintain partial throttle to sustain flame effect. Repeat as needed to maintain performance. - If RPM drops below 1800, release the switch immediately. Do not continuously hold the switch without achieving flame, as this may cause engine damage. Specifications: Name: Fire-breathing Exhaust System Weight: 0.35kg Dimensions: As shown in product images