Emission controls in older carbureted engines relied on forcing additional air from pumps and valves located just before the exhaust manifold to ensure better burns. This is known as a secondary air injection system, and today has evolved to increase the efficiency of Catalytic Converters. Failed pumps and leaks are common signs of a bad Air Injection System, leading to off air and fuel ratios and poor acceleration. Remember to check the Manifold Gaskets and Seals for wear and tear when examining the exhaust.
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2 pc Walker Quiet-Flow Exhaust Mufflers for 1978-1979 Pontiac Firebird 6.6L V8Special Price $114.81 Regular Price $163.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1965 Mercury Marauder 6.4L V8Special Price $121.90 Regular Price $173.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1969-1978 Dodge Monaco 7.2L V8Special Price $126.15 Regular Price $179.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1967-1976 Dodge Charger 5.6L 5.9L 6.3L 6.6L 7.0L 7.2L V8Special Price $126.15 Regular Price $179.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1970 Ford Falcon 5.8L 7.0L V8Special Price $126.15 Regular Price $179.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1975-1979 Chrysler Cordoba 5.9L 6.6L V8Special Price $126.15 Regular Price $179.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1967-1970 Plymouth GTX 7.0L 7.2L V8Special Price $126.15 Regular Price $179.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1969-1971 Ford Torino 5.8L 6.4L 7.0L V8Special Price $126.15 Regular Price $179.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1969-1971 Mercury Cyclone 5.8L 6.4L V8Special Price $126.15 Regular Price $179.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1973-1974 Oldsmobile Delta 88 7.5L V8Special Price $126.15 Regular Price $179.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1973 Buick Centurion 7.5L V8Special Price $126.15 Regular Price $179.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1969-1971 Mercury Montego 5.8L 6.4L 7.0L V8Special Price $126.15 Regular Price $179.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1978-1980 Dodge D150 5.9L V8Special Price $126.15 Regular Price $179.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1973-1976 Oldsmobile Toronado 7.5L V8Special Price $126.15 Regular Price $179.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1973-1974 Oldsmobile 98 7.5L V8Special Price $126.15 Regular Price $179.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1970 Plymouth Superbird 7.2L V8Special Price $126.15 Regular Price $179.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1968-1974 Plymouth Road Runner 5.2L 5.6L 5.9L 6.3L 6.6L 7.0L 7.2L V8Special Price $128.73 Regular Price $183.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1969-1978 Plymouth Fury 5.9L 6.6L 7.2L V8Special Price $128.73 Regular Price $183.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1973 Buick Riviera 7.5L V8Special Price $128.73 Regular Price $183.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1969-1970 Ford Fairlane 5.8L 7.0L V8Special Price $128.73 Regular Price $183.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1973 Buick LeSabre 7.5L V8Special Price $128.73 Regular Price $183.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1968-1970 Plymouth Belvedere 6.3L V8Special Price $128.73 Regular Price $183.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1969 Mercury Comet 5.8L 6.4L V8Special Price $128.73 Regular Price $183.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1979-1980 Dodge D100 Panel 5.9L V8Special Price $128.73 Regular Price $183.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1974-1976 Chevrolet Impala 7.4L V8Special Price $128.73 Regular Price $183.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1973 Buick Electra 7.5L V8Special Price $128.73 Regular Price $183.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1975-1976 Ford Custom 500 7.5L V8Special Price $128.73 Regular Price $183.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1974-1976 Chevrolet Caprice 7.4L V8Special Price $128.73 Regular Price $183.99
- 2 pc Walker SoundFX Exhaust Mufflers for 1973-1975 Chevrolet Bel Air 5.7L 7.4L V8Special Price $128.73 Regular Price $183.99
