Failed Emissions: Plea for Help

[William Conner]

My SE-R recently failed the Maryland emissions test.  This email is an
unabashed plea for your suggestions on how to bring my car into
compliance.  Or at least get it to pass the test.

About the car....
- 1993 Classic, 100K in generally excellent condition
- Random Tech cat with 10K on it
- HS Header with the AIV fitting plugged and AIV hardware removed (but
EGR in tact), header wrap on the flex joint to reduce noise
- JWT ECU with program for removal of AIV
- AFAIK, the O2 sensor is original
- Timing optimized on dyno after installation of JWT ECU -- probably
15-16 degrees BTDC
- PR CAI, otherwise stock.

About the test results....
...........MD Standard.....   ........Measured Level
HC...........1.10.............................0.93
CO..........20.0..............................6.55
NOX.... .....2.30.............................3.51
CO2.........N/A................ ...........328.85
As you can see, the car failed NOX and was marginal on HC.  Maryland
uses a treadmill test and my emissions can be seen as a function of
vehicle speed at  www.xecu.net/billc1 .

Any suggestions will be greatly appreciated.

Thanks in advance,

Bill Conner
--
billc@fred.net

--
billc@fred.net