aFe Mach Force-Xp 3 IN Cat-Back Exhaust System with Dual Polished Tips (49-42013-P) 17130 Max power gains of +54

Max power gains of +54

Bump steer is undesirable because the suspension is steering the car instead of the driver

7 (ILE) 1991 Pontiac Firebird Engine: 3

Description_SHO Cat-Back(tm) System

aFe Mach Force-Xp 3 IN Cat-Back Exhaust System with Dual Polished Tips (49-42013-P) 17130 Max power gains of +54Mach Force XP 409 SS Cat Back Exhaust System with Split Rear Exit (49 42013 P) by aFe. Exhaust System Type: Cat Back. Exhaust Tubing Material: 409 SS. Main Tubing Diameter: 3". Exhaust System Sound: Aggressive Loud. Get increased exhaust flow, more horsepower and torque, improved performance and lower exhaust gas temperatures with the aFe Mach Force XP Cat Back Exhaust System. aFe dyno tests every system for maximum gains, and constructs them from