DP Question
#1
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DP Question
If you put on a dp, you eliminate the pre-cat. Will you sill pass emisions?
I don't want to put a dp on and then take it off just to pass emissions.
I don't want to put a dp on and then take it off just to pass emissions.
#3
You need a well working air-pump, and main cat to pass emissions. If you are really worried about it, you can always buy products to put in your tank to help you pass, but you should be fine, assuming the other two I listed are in well working order.
#6
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You should be able to pass the "sniff" test with a downpipe. Be sure you go to a shop where the smog tech isn't too picky. Some states require that you pass a visual test, where the mechanic is supposed to check to see that all of the smog equipment is on the car, including the pre cat. Many mechanics don't check. Some do.
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