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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- Walker Rear Converter To Resonator Exhaust Pipe Flange Gasket for 2009-2016 Subaru Forester 2.5L H4Special Price $19.23 Regular Price $26.99
- Walker Int Pipe To Converter Exhaust Pipe Flange Gasket for 1991-1996 Nissan Sentra 1.6L L4Special Price $2.25 Regular Price $2.99
- Walker Int Pipe To Converter Exhaust Pipe Flange Gasket for 1995-1996 Nissan 200SX 1.6L L4Special Price $2.25 Regular Price $2.99
- Walker Int Pipe To Converter Exhaust Pipe Flange Gasket for 1986-1988 Nissan Stanza 2.0L L4Special Price $2.56 Regular Price $3.99
- Walker Rear Converter To Resonator Exhaust Clamp for 2008-2012 Chevrolet Malibu 2.4L 3.5L 3.6L L4 V6Special Price $4.23 Regular Price $5.99
- Walker Rear Converter To Resonator Exhaust Clamp for 2008-2009 Saturn Aura 2.4L 3.5L L4 V6Special Price $4.23 Regular Price $5.99
- Walker Int Pipe To Converter Exhaust Pipe Flange Gasket for 1989-1995 Nissan Pathfinder 3.0L V6Special Price $4.52 Regular Price $5.99
- Walker Int Pipe To Converter Exhaust Clamp for 1990 Chevrolet C3500 5.7L V8Special Price $7.12 Regular Price $9.99
- Walker Rear Converter To Resonator Exhaust Bolt & Spring for 2009-2016 Subaru Forester 2.5L H4Special Price $12.32 Regular Price $17.99
- Walker Rear Converter To Resonator Exhaust Bolt & Spring for 2010-2017 Subaru Outback 2.5L H4Special Price $12.32 Regular Price $17.99
- Walker Rear Converter To Resonator Exhaust Bolt & Spring for 2010-2017 Subaru Legacy 2.5L H4Special Price $12.32 Regular Price $17.99
- Walker Int Pipe To Converter Exhaust Bolt & Spring for 1990-1991 Honda Civic 1.6L L4Special Price $12.32 Regular Price $17.99
- Walker Rear Converter To Resonator Exhaust Bolt & Spring for 2013-2015 Subaru XV Crosstrek 2.0L H4Special Price $12.32 Regular Price $17.99
- Walker Int Pipe To Converter Exhaust Bolt & Spring for 1990-1993 Acura Integra 1.8L L4Special Price $12.75 Regular Price $17.99
- Walker Rear Converter To Resonator Exhaust Bolt & Spring for 2016 Subaru Crosstrek 2.0L H4Special Price $12.75 Regular Price $17.99
- Walker Rear Converter To Resonator Exhaust Pipe Flange Gasket for 2008-2016 Subaru Impreza 2.0L 2.5L H4Special Price $18.68 Regular Price $26.99