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Sedans Honda Civic Honda Civic Real World MPG
2058 messages, Last post on Aug 26, 2009 at 6:19 PM
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Replying to: shipo (Aug 06, 2007 7:43 pm)
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I just had a k & n ram air system installed on my 07 civic coupe over the weekend. I'm open minded and want to see for myself if it really does make a difference. Since it was installed I have noticed that driving at 55 mph to work and back I use significantly less throttle. I've been driving for over 40 yrs and my driving style has not changed even a little bit. I will report my experience back to this board after a tank or two. So far in city driving I have been getting a consistant 35 mpg and I think that may not change significantly but we'll see.
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Replying to: whitewolf (Aug 07, 2007 1:41 pm) 1.the before and after UOA's Bobistheoilguy.com numbers indicate greater load (in the oil system) of silicon (aka dirt) 2. actual before and after dyno runs on Z06 Corvette.com. No demonstrated statistical difference in hp/torque attributed to (oiled)air filter media use. Also atomized mineral oil is NOT, I repeat NOT good for the intake of ANY ICE!! It also increases the chances of the oxygen sensor and chip corroding!!! |
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Replying to: joe147 (Aug 07, 2007 8:00 am) Say this is true (I dont use them so I dont know either way)...why dont they market this? With some easy controlled testing, they'd have a marketing plan that would capture the market. I haven't used one so I can only speculate, but having gotten 40.92 MPG on one highway trip in my Accord before, I have a hard time believing that I would have gotten 45 MPG (of course I had a hard time believing I got 40.92!). |
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its not necesarily 4 mpg.....its usually about 5% gain in mpg and sometimes (dyno tested) it been up to 12% horsepower on certain cars...other cars as small as 2%. It must depend how restricted the breathing the car is directly from the factory. As far as marketing?......lol Its in every Pep Boys....Checker auto....Kragen....and Autozone....In the country. I can get one from any of those places in the U.S. |
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Replying to: joe147 (Aug 07, 2007 8:00 am) Sorry dude, it's all in your head (and the head of those that are deluded into thinking the same thing as you think). There is absolutely zero scientific evidence to support your claims. In fact, even common sense would suggest that the K&N cleaner won't do squat when it comes to fuel economy. Why? Simple, your engine measures the weight of the air after it has passed through the air filter (and usually the throttle body as well), and then adds the appropriate amount of fuel to the air. If (and I only say "if" for the sake of argument) more air was allowed to enter the engine after adding a K&N, then your car would add MORE fuel and your mileage wouldn't change one bit. Best Regards, Shipo |
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Replying to: caaz (Aug 08, 2007 10:09 am) Please don't confuse power at WOT with fuel economy. I think that there is little doubt that a K&N filter will offer less restriction at WOT (at the expense of extra dirt getting into the engine), however, at cruising speeds, the demands of an engine on its air filtration system are minuscule. At any given throttle setting during a steady state freeway cruise; there will not be a measurable difference between the air passing through a clean OEM filter and a K&N. Best Regards, Shipo |
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Replying to: caaz (Aug 08, 2007 10:09 am) but rather a lack of mentioning such an increase in fuel economy. even if it was only a proven 2% gain, in times like these with the way gas is, A LOT of people would be all over it. I really doubt a k&n filter makes any such boosts in fuel economy, especially not when they are supposed to be for better performance. Performance and fuel economy usually DON'T go hand in hand. good points by shipo and ruking as well.
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Replying to: caaz (Aug 08, 2007 10:09 am) Sorry, I was referring to how it is advertised and marketed to customers. I never seen any ad campaigns talking about such big gains. |
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is that if fuel economy could be improved this way, why wouldn't the manufacturers take advantage of it and then promote the heck out of it?
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