Weatherman
Elite Explorer<br><img src="/forums/images/stars4.
- Joined
- March 26, 1999
- Messages
- 171
- Reaction score
- 0
- City, State
- Manassas, VA
- Year, Model & Trim Level
- 91 XL
So I finally took my '91 explorer to get emissions tested (VA) after working on it. All the emissions components were in place. I did add JBA headers, a Car Sound (MagnaFlow) direct fit cat, and a Flowmaster Cat-back. It failed for NO readings, but everything else was low.
Results were: (first # = reading, second # = limit)
Speed...........15 MPH...........25 MPH
RPM's..........1392 RPM........1484 RPM
HC(ppm).......18/134............21/130
CO%...........0.01/1.08........0.01/1.34
NO (ppm).....1985/888........1677/809
Dilution............14.1..............14.1
Shop diagoned problem as failed converter(s), saying there should be minimum 100 degree difference across each one. Actual readings were 23 degrees and negative 100 degrees.
There's only 100 miles on the exhaust, and now I'm going around and around with MagnaFlow relating to the converter.
Anyone else got insight on catalytic converters, or experience with aftermarket converters? I searched through the board, and someone said one converter is NO only and the other everthing else.
- Ben
Results were: (first # = reading, second # = limit)
Speed...........15 MPH...........25 MPH
RPM's..........1392 RPM........1484 RPM
HC(ppm).......18/134............21/130
CO%...........0.01/1.08........0.01/1.34
NO (ppm).....1985/888........1677/809
Dilution............14.1..............14.1
Shop diagoned problem as failed converter(s), saying there should be minimum 100 degree difference across each one. Actual readings were 23 degrees and negative 100 degrees.
There's only 100 miles on the exhaust, and now I'm going around and around with MagnaFlow relating to the converter.
Anyone else got insight on catalytic converters, or experience with aftermarket converters? I searched through the board, and someone said one converter is NO only and the other everthing else.
- Ben