sturner91

I found this on another site regarding the MPG decrease with mud flaps. I can't seem to figure out why my mileage would have gone down so much though???? "This is a good question. And the answer is simple, yet complex. As the Mythbusters showed, a tailgate being down actually DECREASES gas mileage, by about 1-2 MPG. The air cycles around and ends up PUSHING on the cab, and creating a partial counter to drag, but the tailgate open allows that air to just rush out, and it will not cycle back into the cab. The concept is similar to a mudflap, they are close enough to the wheel/tire, that most of the time, they won't produce any drag at all, except as measurable on a microscopic level. It won't affect your mileage in any way, especially not that you'd notice. Yeah, you might go from 26.2857394702 MPG to 26.2857394701 MPG, but that's less than a penny more at the pump. You'd have to fill up more than 1,000,000 times to pay even a penny or two more."

Yeah I've noticed my blue temp light on longer now as well. I'm driving the hatch version of your car, love the car! The only change that occurred was adding mudflaps. But I wouldn't think mudflaps could create that much drag. I'm almost convinced to take them off, I have also noticed since adding the flaps the car pulls around a lot more from wind(does anyone else experience this??). I mean I do know that I was roughly averaging at 25-27mpg, usually closer to 27mpg. I drive about 45mins to and from work mainly city style driving, occasional roads that hit 45-50mph.

So I drive a 2014 Impreza Sport Premium, not a WRX or STI(I know I should have gotten one of these >.<). The car is automatic however I drive it in manual 100% of the time, yes with the flappy paddles. I've recently throw mudflaps on the car and have noticed roughly 4-8mpg decrease, was curious if anyone has seen this occur? I did do some research and saw some people said there would be very minimal mpg decrease, but i didn't think it would bring me down from 27mpg to 20~23mpg. The other thing I was debating, it's nice and cold here now, would cold weather have effect on a cars mpg? I did notice that due to cold temperature the mpg digital read jumps around a lot and is quite slow and inaccurate at reading when its below 32 degrees outside. The alternative way I've come to guessing how my car is doing is by matching the amount of miles to the amount of gas. For example, usually when the first 3 bars of the tank are gone I should have about 100 miles, sometimes a little less, on the tank, some times a little bit more - but since installing the flaps its been about 70-80 miles on the tank when those bars go away. There's only 6350-6400 miles on the car and I just had my second oil change. Now for the other questions, keep in mind, I am very grateful for all and any answers. To start things off, the car is still under warranty, so I am hesitant to doing any modifications for now, unless someone can explain why my warranty would not be voided. Either way, I am looking into potentially doing a CAI or an exhaust, potentially both after a period of time. Some questions I have, if doing a CAI would I need to tune my car after? I was reading that you would want to but it looked like that was mainly around cars with turbos. My question is, if my car can support a CAI, would it need to be tuned after installation? If so, can someone explain to me why? My other question regarding an exhaust; if I do an exhaust(was currently looking at the Borla Axle Back) would I need to have the CAI to compensate for the output of the exhaust? Some of my friends tell me yes and some no, so I am resorting to you guys for better input. Any sort of guidance on these is much appreciated. I am not a car person, I work with computers, my friends are the car ones - with conflicting information I like to get a wider groups input. Thanks in advance for any input/guidance you guys have for me.

No I haven't actually. They told me I wouldn't be due till 7500

Curious about this, but when I got my car back the check engine light was still on, seeing as they haven't replaced the valve yet, waiting for the part to come in. But today when I turned my car on the light went off on its own. Any idea why?

Thanks for the input. The dealership just called me and said the code was P000A -- they say the Oil Control valve on the left side is faulty and needs to be replaced. It is under warranty so nothing to pay

So I'm new here as well as a new Subaru owner. So far, great car - definitely tops my Corolla S I was driving around previously. Anyhow, I recently picked up a 2014 Impreza(about a month ago). Within the first week or so, about 900 miles, my check engine light came on. I went ahead and took it to the dealership. They told me a solenoid between the timing belt and exhaust could be failing(something that measures a temperature). Not sure what the code is nor can I acquire it without going to a dealership. They went ahead and reset the error and told me a piece of debris(dust) could have gotten into the solenoid and triggered the error. I was told if it comes back to return to the dealership where they will swap the solenoid with the alternate side. Well here I am at ~1500miles with the same check engine light. Does anyone have any idea what is causing this or why this is happening? Obviously its under warranty so I will take it back in for service - just curious why this is happening and if anyone else has experienced this. Sorry for the noob based post - again, new Subaru owner and I was told this would be a good place to come for help. Thanks in advance!