aFe Silver Bullet Throttle Body Spacers TBS BMW 325i (E46) 01-06 L6-2.5L 1977-audi-fox-base-esi7204031 Replace the Polyphonic Harmonizer behind

Replace the Polyphonic Harmonizer behind the muffler in this ATAK(r) system with muffler 60679 to attain the S-Type sound level (quieter than ATAK(r))

Lightweight And Portable

OEM Corvette tank and integrate with the stock fuel-level sending unit and jet-siphon transfer pump

ORB-10 ports

05-13 C6 Corvette

aFe Silver Bullet Throttle Body Spacers TBS BMW 325i (E46) 01-06 L6-2.5L 1977-audi-fox-base-esi7204031 Replace the Polyphonic Harmonizer behindSilver Bullet throttle body spacers create turbulence in the air flow at the point just prior entry into the engine increasing horsepower, torque and improving throttle response and fuel efficiency. Silver Bullet throttle body spacers are constructed out of durable T 6061 billet aluminum and using a unique serrated helix entry to create turbulence at the manifold while eliminating the annoying whistle found in other helix only throttle spacers.