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34 Posts
Wasn't sure if this was the right place to put this, but I figured it would be better than in the engine section, and it's not really anything for the off topic, since it deals with my Versa. Anyway...
I stopped by Car X today to get an estimate to fix my exhaust. While I respect everyone that does automotive work, the owner said something that kinda surprised me. He told me that aftermarket exhaust systems actually decrease fuel mileage, because the oxygen sensors work off of the back pressure in the exhaust system, and when the back pressure is reduced, the oxygen sensors tell the computer to add more fuel to increase it.
I'm sorry, but, from my education from WyoTech, that is completely wrong, or did one of the top ranked automotive schools in the nation give me the wrong explanation of what an oxygen sensor does? I highly doubt it.
I stopped by Car X today to get an estimate to fix my exhaust. While I respect everyone that does automotive work, the owner said something that kinda surprised me. He told me that aftermarket exhaust systems actually decrease fuel mileage, because the oxygen sensors work off of the back pressure in the exhaust system, and when the back pressure is reduced, the oxygen sensors tell the computer to add more fuel to increase it.
I'm sorry, but, from my education from WyoTech, that is completely wrong, or did one of the top ranked automotive schools in the nation give me the wrong explanation of what an oxygen sensor does? I highly doubt it.