NEW! Testing Results: This is the opacity results from a 1999 International with a Cummins N14 engine.
Before HFI Installation and After HFI Installation. View here (PDF)
Testing Results: California Environmental Engineering Report. View here (PDF)
Testing Results: Millbrook Vehicle Emissions Laboratory (U. K. Taxi). View here (PDF)
Testing Results: Vehicle Emissions Report (2000 Volvo). Before (PDF) After (PDF)
Fact Sheet: 50 Million Miles can't be wrong! View here (PDF)