Full Line Exhaust.com
Suppliers

FLE-Online.com
A store that sells catalytic converters and a variety of exhaust products and accessories including Flowmaster and MagnaFlow mufflers and exhaust systems

MagnaFlow
MagnaFlow Exhaust Systems, MagnaFlow Mufflers, MagnaFlow Catalytic Converters, and MagnaFlow Accessories

Flowmaster
Flowmaster Exhaust Systems, Flowmaster Mufflers, and Flowmaster Accessories

CATCO Catalytic Converters
Catalytic Converters and Catalytic Converter Accessories

MBRP Performance Exhaust
Mufflers, Exhaust Systems, Tailpipes and Exhaust Tips

Walker
Walker Exhaust Systems and DynoMax

IMCO
Stock Exhaust and IMCO Performance

Converter Efficiency Charts

Converters can only work efficiently if the engine is operating properly and the exhaust is leak tight. The charts at the bottom show the typical relationship of engine exhaust. Converter effiency and resulting tailpipe emissions measured during emission tests. Both too-rich or too-lean conditions can cause emission failures.



HC
CO
NOx
 Possible Cause or Recommended Action
High
High
High
 Replace converter and O2 sensor: verify tune-up and correct any faults.
High
Low
High
 Replace converter, tune-up & check lean AFR, leaking exhaust valves
Low
High
High
 Replace converter and O2 sensor
High
High
Low
 Rich AFR, air Injection
High
Low
Low
 Run-In converter, tune-up, oil change
Low
Low
High
 EGR, lean ARF, leaks, run-in converter, use larger converter.
Low
High
Low
 O2 sensor, rich AFR


Tailpipe Emissions Graph
Converter Performance Graph
Engine Emissions Graph
© 2011, Full Line Exhaust - webmaster@fulllineexhaust.com