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Reduced Fuel Milage after High Flow Catted Downpipe

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mustardsupra

mustardsupra

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How are you calculating MPG? The real time MPG on the dash or actually doing the math?

Only accurate way is doing the math. Miles Driven ÷ Gallons Used = MPG
Yeah, as of now, I haven't pulled specific numbers. I just wanted to see if anyone else noticed a drop in mileage. My range came down significantly from a full tank, so that's where I'm coming from. Again i'll get you the numbers next time i'm at my car
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razorlab

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Yeah, as of now, I haven't pulled specific numbers. I just wanted to see if anyone else noticed a drop in mileage. My range came down significantly from a full tank, so that's where I'm coming from. Again i'll get you the numbers next time i'm at my car
Anything on the dash that says MPG or Range is totally theoretical. Also, if you disconnected your battery for the install, that will throw those numbers off too.
 
 








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