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Discussion Starter #1
Hey I'm getting the toyomoto header/midpipe kit for my car and since it's new I won't have to get an emissions inspection on it for about 2 or 3 years, but after that if I have to swap the old exhaust back on, how hard would it be to reverse the O2 sim connections back to stock. I'd like to know before I do something I can't reverse.
 

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I don't think that it would be necessary to take the o2 sim off because it just simulates that the cats are there when in fact they are not.
 

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This is not true. The emulators simulate a O2 Simulators signal of its all ok regardless of what the real reading of the gasses are, if you reinstall the stock header there is no guaranty that the car will pass smog, because it won't know to adjust for any changes that may have occurred over time.


lexhustler said:
I don't think that it would be necessary to take the o2 sim off because it just simulates that the cats are there when in fact they are not.
 
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