How significant is it if on a before and after smog test with only 450 miles ran on it shows basically a 95% decrease in HC, CO, and NO. The only negative was the NO at 25 mph, it showed a 14% increase but still cleared the maximum allowed. That part was a bit confusing, as all other test results showed better figures at 25 mph vs the 15 mph, higher speeds should produce less bad gases, so I think.
The vehicle is a 1990 Acura Integra with 182,000 miles on it.
The only thing I have done before the 400 mile test drive was add a XX device to the vehicle, and it decreased my emissions like 95%. I would think that is remarkable if not revolutionary.
Kindly let me know your opinion, and why on the NO results the 25 mph reading was higher higher than the 15 mph reading, a bit odd.
have the same problem?
Thursday, January 20th, 2011 AT 6:36 AM