Emmisisons Test questions

BOB HOWARD

MEMBER
1990 ACURA INTEGRA
4 CYL
FWD
AUTOMATIC
182,000 MILES

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.

Rgds,

Bob

3 Replies

DOCHAGERTY

MECHANIC
9,601 POSTS

XX. What is that? Nox reading have nothing to do with speed, they are due to temperature in the combustion chamber, the higher the temperature the more Nox the engine produces. The cat at 182k aint no spring chicken either, and it could be a factor in the Nox reduction as well.

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Thursday, January 20th, 2011 AT 6:48 AM

BOB HOWARD

MEMBER
3 POSTS

This xx product reduced my emissions dramatically overall, except for NOX at 25 mph, it +14% to that, but still passed with flying colors. I'll have to review my numbers, but I'm very pleased it could do this in only 450 miles of driving, and showing such improvement on a before and after comparison. I don't want to make public the product name yet, less be accused of self-promotion, but if anyone really cares to know you can call me at 626-458-8700. I can fax you the two smog test results for comparison and review.

I just want to get a feel how this can be, and if it is of any great significance. The xx device, is fairly cheap. Cost less than the smog test really.

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Thursday, January 20th, 2011 AT 8:02 AM

DOCHAGERTY