Verified Technologies List (EPA)

EPA Verifications

Click here for an overall summary list of EPA Verifications for Engine Control Systems

ECS PRODUCT	ENGINE COVERAGE / EPA EMISSIONS REDUCTION CREDIT VALUES
ECS Purifilter	1994 -2003 HD Hwy Engines Diesel Retrofit Technology Verification EPA Verification Letter PM: 90% HC: 85% CO: 75%
AZ Purifier Purimuffler with CCV	1991 -2004 HD Hwy Engines Diesel Retrofit Technology Verification EPA Verification Letter PM: 40% HC: 75% CO: 60%
AZ Purifier Purimuffler	1991 -2003 Cummins / International Medium HD Engines Diesel Retrofit Technology Verification EPA Verification Letter PM: 40% HC: 70% CO: 40%	1991 -1993 Cummins Heavy HD Engines Diesel Retrofit Technology Verification EPA Verification Letter PM: 35% HC: 70% CO: 40%	All HD Hwy 4 Stroke Engines Diesel Retrofit Technology Verificatio In respect to EPA verifications, there is no Verification Letter for the 20% PM reduction for the ECS Purimuffler. This verification is carried over from the EPA Urban Bus Retrofit Rebuild Program. For further information, please contact Carl Wick from the US EPA at 202-343-9331. PM: 20% HC: 50% CO: 40%	All HD Hwy 2 Stroke Engines Diesel Retrofit Technology Verification EPA Verification Letter PM: 20% HC: 50% CO: 40%
ECS Purifilter Plus	1994-2006 Non-EGR Engines Diesel Retrofit Technology Verification EPA Verification Letter PM: 90% HC: 85% CO: 75%