HI All,
You have been great help over the past year.
Anyhow- I had a question regarding emissions test results.
I finally got the tuning "done" (ended up using a pro) and took it in for a Colorado smog test.
I initially failed and decided to replace the catalyst to see if I could sneak by. That made a HUGE difference... here are my numbers both with the old cat and the new one:
EPA Limit Old Cat New Cat
2.00 2.29 0.34 20.00 25.71 4.46
702.93 795.28 4.00 8.89 2.19
The first column is the EPA limit here in Colorado in Grams Per Million (GPM). The numbers I believe are an average taken over the entire dyno test which spans idle to 60MPH cruise.
The first thing of interest is HOW WELL the cat "fixes" the readings.
My concern is whether or not the Cat is working too hard and the engine needs more tuning.
Any thoughts on this?
Thanks!!!
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