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Discussion Starter #1
i have a 88 iroc camaro with a stock 350.it passed everything except for excessive NOx.what would cause my car to do that.please give me some clues.
thanks billy
 

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Originally posted by dnult:
NOx is a lean mixture condition.

-dnult
sorta... a lean mix will increase combustion temps...

NOx is caused by high combustion temps...

the EGR system is intended to reduce combustion temps...

and an ORC cat helps control NOx...

can you post the results of all the gasses from the test??? as well as the RPM they occured??? or is it a chassis dyno test???
 

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Discussion Starter #7
hey i bought the car with the speedo-cable broken and it would pull up code 24 v.s.s.i fixed the speedo cable.i read the v.s.s. helps activate the e.g.r.so do you think this might be the problem with my high HOx???????
thanks for the replies!
 
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