http://www.scca.com/_FileLibrary/Fil...track-sept.pdf
TECH BULLETINS
1) Street Touring: In the second sentence of 14.10.E, replace “US DOT” with “EPA tailpipe” and in 14.10.E.6, replace “STS” with
“ST” and replace “the Federal 49-state safety and tailpipe emissions” with “EPA tailpipe emissions”. Note: This corrects the reference
to the responsible agency within the federal government.
2) Street Touring: The Tech Bulletin published in the August 2007 Fastrack in regards to the “emissions system” was intended
to refer to the “emissions monitoring system” in all cases. Since the inception of the ST category, the goal has been to reflect
common, street-legal modifications, as stated in the opening paragraph of section 14. An integral part of street legality is emissions
legality. The SEB interprets the phrases “meet emissions standards” and “emissions legal” as the ability to meet the
tailpipe emissions standards of an Inspection and Maintenance (I/M) test. I/M testing is commonly required by the EPA in socalled
“non-attainment zones” and is a subset of the original vehicle emissions certification (Federal Test Procedure).
On vehicles equipped with OBD-II monitoring, the I/M test relies on the OBD-II system to determine whether or not the vehicle
meets the tailpipe emissions standards. Non-compliance is indicated by the malfunction indicator lamp (MIL, commonly called
a check engine light). As such, modifications that invalidate the monitoring and/or reporting of the OBD-II system are not considered
emissions legal.
On pre-OBD-II vehicles, the I/M test utilizes a dynamometer test to determine whether or not the vehicle meets the tailpipe emissions
standards. The three common tailpipe dynamometer tests are IM240, ASM2525 and ASM5015.
1) Street Touring: In the second sentence of 14.10.E, replace “US DOT” with “EPA tailpipe” and in 14.10.E.6, replace “STS” with
“ST” and replace “the Federal 49-state safety and tailpipe emissions” with “EPA tailpipe emissions”. Note: This corrects the reference
to the responsible agency within the federal government.
2) Street Touring: The Tech Bulletin published in the August 2007 Fastrack in regards to the “emissions system” was intended
to refer to the “emissions monitoring system” in all cases. Since the inception of the ST category, the goal has been to reflect
common, street-legal modifications, as stated in the opening paragraph of section 14. An integral part of street legality is emissions
legality. The SEB interprets the phrases “meet emissions standards” and “emissions legal” as the ability to meet the
tailpipe emissions standards of an Inspection and Maintenance (I/M) test. I/M testing is commonly required by the EPA in socalled
“non-attainment zones” and is a subset of the original vehicle emissions certification (Federal Test Procedure).
On vehicles equipped with OBD-II monitoring, the I/M test relies on the OBD-II system to determine whether or not the vehicle
meets the tailpipe emissions standards. Non-compliance is indicated by the malfunction indicator lamp (MIL, commonly called
a check engine light). As such, modifications that invalidate the monitoring and/or reporting of the OBD-II system are not considered
emissions legal.
On pre-OBD-II vehicles, the I/M test utilizes a dynamometer test to determine whether or not the vehicle meets the tailpipe emissions
standards. The three common tailpipe dynamometer tests are IM240, ASM2525 and ASM5015.
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