Dramatic smog reduction on 182K car

1990 ACURA INTEGRA
182,000 MILES • 4 CYL • FWD • AUTOMATIC
Avatar
BOB HOWARD
  • MEMBER
  • 3 POSTS
Here are the before after results: Both passed, the after with much better results.

Before 8-23-10 odometer 179,375 miles

CO2 O2 HC CO NO

15 mph 14 0.1 85 .37 739
25 mph 14.9 0.0 31 .11 126


X device installed at about 182,200 miles, drove only 400 miles.

After 1-19-11 odometer 182,619

15mph 12.9 2.7 17 .09 396
25mph 12.7 3.1 7 .01 146


Basically, shows across the board improvement only NO at 25 mph a little increase.


How significant is this? I think it merits more research. It could be the magic bullet.
Jan 24, 2011 at 6:45 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
DOCHAGERTY
  • CAR REPAIR CONTRIBUTOR
  • 9,603 POSTS
Interesting how the Co2 numbers came down and the O2 went up.
Jan 24, 2011 at 6:54 AM
Advertisement
Avatar
DOCHAGERTY
  • CAR REPAIR CONTRIBUTOR
  • 9,603 POSTS
After calculating Lambda, the before numbers showed a Lambda of .9917 which is within the fuel control range of the O2 sensor and and air/fuel ratio of 14.58
After shows a Lambda of 1.137 and and air/fuel ratio of 16.71 which is a lean mixture. The STFT and LTFT numbers might be worth looking at before you try to load that magic bullet in your gun.
Jan 24, 2011 at 7:18 AM