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8391 section changes clear filters

Key: Amended Section text was updated Added New section added to the CFR Removed Section no longer in current CFR
Date CFR Section Type
2026-03-14 § 1065.665 — Thce And Nmhce Determination
40 C.F.R. § 1065.665
Amended
2026-03-14 § 1065.680 — Adjusting Emission Levels To Account For Infrequently Regenerating Aftertreatment Devices
40 C.F.R. § 1065.680
Amended
2026-03-14 § 1066.820 — Composite Calculations For Ftp Exhaust Emissions
40 C.F.R. § 1066.820
Amended
2026-03-14 § 1065.667 — Dilution Air Background Emission Correction
40 C.F.R. § 1065.667
Amended
2026-03-14 § 1066.270 — Unloaded Coastdown Verification
40 C.F.R. § 1066.270
Amended
2026-03-14 § 1066.845 — Ac17 Air Conditioning Efficiency Test Procedure
40 C.F.R. § 1066.845
Amended
2026-03-14 § 1090.1240 — Recordkeeping Requirements For Gasoline Detergent Blenders
40 C.F.R. § 1090.1240
Amended
2026-03-14 § 1065.750 — Analytical Gases
40 C.F.R. § 1065.750
Amended
2026-03-14 § 1066.235 — Speed Verification Procedure
40 C.F.R. § 1066.235
Amended
2026-03-14 § 1066.310 — Coastdown Procedures For Vehicles Above 14,000 Pounds Gvwr
40 C.F.R. § 1066.310
Amended
2026-03-14 § 1090.715 — Deficit Carryforward
40 C.F.R. § 1090.715
Amended
2026-03-14 § 1065.690 — Buoyancy Correction For Pm Sample Media
40 C.F.R. § 1065.690
Amended
2026-03-14 § 1065.675 — Cld Quench Verification Calculations
40 C.F.R. § 1065.675
Amended
2026-03-14 § 1090.745 — Informational Annual Average Calculations
40 C.F.R. § 1090.745
Amended
2026-03-14 § 1066.265 — Acceleration And Deceleration Verification
40 C.F.R. § 1066.265
Amended
2026-03-14 § 1065.672 — Drift Correction
40 C.F.R. § 1065.672
Amended
2026-03-14 § 1066.605 — Mass-based And Molar-based Exhaust Emission Calculations
40 C.F.R. § 1066.605
Amended
2026-03-14 § 1066.610 — Dilution Air Background Correction
40 C.F.R. § 1066.610
Amended
2026-03-14 § 1066.615 — Nox Intake-air Humidity Correction
40 C.F.R. § 1066.615
Amended
2026-03-14 § 1068.35 — 1068.35 Symbols, Acronyms, And Abbreviations
40 C.F.R. § 1068.35
Amended
2026-03-14 § 1090.700 — Compliance With Average Standards
40 C.F.R. § 1090.700
Amended
2026-03-14 § 1066.630 — Pdp, Ssv, And Cfv Flow Rate Calculations
40 C.F.R. § 1066.630
Amended
2026-03-14 § 1066.260 — Parasitic Friction Compensation Evaluation
40 C.F.R. § 1066.260
Amended
2026-03-14 § 1066.250 — Base Inertia Verification
40 C.F.R. § 1066.250
Amended
2026-03-14 § 1090.740 — Downstream Bob Recertification
40 C.F.R. § 1090.740
Amended
2026-03-14 § 1065.670 — Nox Intake-air Humidity And Temperature Corrections
40 C.F.R. § 1065.670
Amended
2026-03-14 § 1068.501 — How Do I Report Emission-related Defects?
40 C.F.R. § 1068.501
Amended
2026-03-14 § 1066.625 — Flow Meter Calibration Calculations
40 C.F.R. § 1066.625
Amended
2026-03-14 § 1065.656 — Hydrogen-based Chemical Balances Of Fuel, Def, Intake Air, And Exhaust
40 C.F.R. § 1065.656
Amended
2026-03-14 § 1051.315 — How Do I Know When My Engine Family Fails The Production-line Testing Requirements?
40 C.F.R. § 1051.315
Amended
2026-03-14 § 1065.660 — Thc, Nmhc, Nmnehc, Ch4, And C2h6 Determination
40 C.F.R. § 1065.660
Amended
2026-03-14 § 1051.720 — How Do I Calculate My Average Emission Level Or Emission Credits?
40 C.F.R. § 1051.720
Amended
2026-03-14 § 1054.310 — How Must I Select Engines For Production-line Testing?
40 C.F.R. § 1054.310
Amended
2026-03-14 § 1051.137 — What Are The Consumer Labeling Requirements?
40 C.F.R. § 1051.137
Amended
2026-03-14 § 1065.602 — Statistics
40 C.F.R. § 1065.602
Amended
2026-03-14 § 1054.705 — How Do I Generate And Calculate Exhaust Emission Credits?
40 C.F.R. § 1054.705
Amended
2026-03-14 § 1048.310 — How Must I Select Engines For Production-line Testing?
40 C.F.R. § 1048.310
Amended
2026-03-14 § 1065.630 — Local Acceleration Of Gravity
40 C.F.R. § 1065.630
Amended
2026-03-14 § 1065.644 — Vacuum-decay Leak Rate
40 C.F.R. § 1065.644
Amended
2026-03-14 § 1065.543 — Carbon Balance Error Verification
40 C.F.R. § 1065.543
Amended
2026-03-14 § 1065.640 — Flow Meter Calibration Calculations
40 C.F.R. § 1065.640
Amended
2026-03-14 § 1060.805 — What Symbols, Acronyms, And Abbreviations Does This Part Use?
40 C.F.R. § 1060.805
Amended
2026-03-14 § 1051.805 — What Symbols, Acronyms, And Abbreviations Does This Part Use?
40 C.F.R. § 1051.805
Amended
2026-03-14 § 1045.705 — How Do I Generate And Calculate Exhaust Emission Credits?
40 C.F.R. § 1045.705
Amended
2026-03-14 § 1054.706 — How Do I Generate And Calculate Evaporative Emission Credits?
40 C.F.R. § 1054.706
Amended
2026-03-14 § 1054.315 — How Do I Know When My Engine Family Fails The Production-line Testing Requirements?
40 C.F.R. § 1054.315
Amended
2026-03-14 § 1065.307 — Linearity Verification
40 C.F.R. § 1065.307
Amended
2026-03-14 § 1065.642 — Pdp, Ssv, And Cfv Molar Flow Rate Calculations
40 C.F.R. § 1065.642
Amended
2026-03-14 § 1054.245 — How Do I Determine Deterioration Factors From Exhaust Durability Testing?
40 C.F.R. § 1054.245
Amended
2026-03-14 § 1065.645 — Amount Of Water In An Ideal Gas
40 C.F.R. § 1065.645
Amended
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