Porsche 993 Bisimoto Stage 1 Muffler Bypass System

Description

Developed in collaboration with legendary Porsche performance engineer Bisimoto, the Soul Performance Stage 1 Muffler Bypass System transforms the air-cooled Porsche 993 driving experience with a sharper, more mechanical exhaust character while preserving the analog personality that defines the platform.

Designed specifically for enthusiasts seeking increased sound and emotional engagement without moving fully into race-oriented territory, the Stage 1 system introduces a deeper, more purposeful tone with enhanced throttle presence and classic air-cooled flat-six character throughout the rev range.

Constructed from precision TIG-welded T304 stainless steel, the system improves exhaust flow while maintaining OEM-like fitment and long-term durability. Under relaxed driving, the exhaust remains composed and highly livable for street use. As throttle input increases, however, the system progressively reveals a far more visceral and motorsport-inspired air-cooled soundtrack.

Purpose-built for drivers who want to enhance the emotional experience of the 993 without sacrificing the car’s iconic balance and usability.

• Porsche 911 Carrera / Carrera 2 / Carrera 4 (993)
• 1994–1998 Models

• Bisimoto Stage 1 muffler bypass system for Porsche 993 Carrera models
• Precision TIG-welded T304 stainless steel construction
• Enhanced air-cooled flat-six sound character
• Increased throttle presence and mechanical engagement
• Progressive exhaust behavior tied naturally to driver input
• Improved exhaust flow and reduced restriction
• OEM-like fitment and installation
• Designed and manufactured in the USA
• Motorsport-inspired acoustics with street-friendly usability