exhaust question
#1
'08 TL-S
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exhaust question
am thinking of aftermarket cat back exhaust, I know lots of you have done this.
the mechanic I use told me that dropping the backpressure can 'confuse' the O2 sensor causing the ECU to richen up the mixture, maybe dropping the mileage. I had always thought that the mileage was supposed to go up (if anything) as the flow improved...
Does this make sense? has anyone seen decreased MPG as a result of changing exhaust??
the mechanic I use told me that dropping the backpressure can 'confuse' the O2 sensor causing the ECU to richen up the mixture, maybe dropping the mileage. I had always thought that the mileage was supposed to go up (if anything) as the flow improved...
Does this make sense? has anyone seen decreased MPG as a result of changing exhaust??
#6
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When you have mods that increase your air flow, the ecu will increase the amount of gas that it pumps into your engine, hense decreasing your gas mileage. But your not going to see much of a difference with a cat back. with headers, definately noticable. Dont worry, its not going to break you.
By the way, Im just curious what are the gas prices in new Jersey?
By the way, Im just curious what are the gas prices in new Jersey?
#7
That's Racist
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Originally Posted by NiteQwill
No, I have actually seen a 1-2 increase.
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#8
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Originally Posted by Kuruption
When you have mods that increase your air flow, the ecu will increase the amount of gas that it pumps into your engine, hense decreasing your gas mileage. But your not going to see much of a difference with a cat back. with headers, definately noticable. Dont worry, its not going to break you.
By the way, Im just curious what are the gas prices in new Jersey?
By the way, Im just curious what are the gas prices in new Jersey?
~$2.25 for premium, still closer to $2.50 in some spots.
#9
Where is my super sauce?
Originally Posted by Kuruption
When you have mods that increase your air flow, the ecu will increase the amount of gas that it pumps into your engine, hense decreasing your gas mileage...
The 'adding this mod will make my MPG better' is a common ploy that most of us use to convince wives/SOs that our intake/header/exhaust purchase is a wise decision.
![Big Grin](https://acurazine.com/forums/images/smilies/biggrin.gif)
#10
Adventurist.
Originally Posted by Time For Sleeep
Hey qwill.. you're so-cal, how many total miles do you get (you said it increased). And when do you fill up? I usually fill up right when the indicator light turns on. (And fill up @ a 14-15 gallon tank).
![Tongue](https://acurazine.com/forums/images/smilies/tongue.gif)
I too fill up at the indicator light
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