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Does anyone know if you replace your cats with the aps test pipes if it will pass emisions
 

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Nope, Test pipes are known to give out more emission than the HFC. I dont even think that the HFC can pass emissions test, but its less than the Test pipes for sure.

here in FL we dont go thru all this stuff.

But to answer ur question, test pipes definately NO....
 

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i love living down south no emissions..........its the best


but yeah youll never pass emission with test pipes..........from what i have heard and read the HFC will pass but def not the test pipes
 

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If you are naturally aspirated then most likely you will not pass emmisions. BUT, if you are going forced induction, especially with twin turbos, then you have a good chance to pass.
 

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If you are naturally aspirated then most likely you will not pass emmisions. BUT, if you are going forced induction, especially with twin turbos, then you have a good chance to pass.
why is this ?
 

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Yeah, not sure about the passing emissions with a turbo part. I know turbos act as a good sound muffler. Notice how boosted cars don't sound as loud as n/a vehicles with the same hp?
 

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If you are naturally aspirated then most likely you will not pass emmisions. BUT, if you are going forced induction, especially with twin turbos, then you have a good chance to pass.

IMO , no way.

Been there and tried that numerous times..

NO cats, Hydrocarbons waaay too high.

Turbochargers don't do jack for emmisions
 
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