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Thread: FINALLY joining the 100k mile club

  1. #1

    FINALLY joining the 100k mile club

    100k.jpg

    Yes, everybody... my bone stock Evo IX SE finally crossed into the 100,000-mile realm yesterday on my way back home from Downtown LA.

    It's been a great experience since I took it off the lot brand new, and I can't really find myself getting rid of it. Obviously with the car itself being around 10 years old (and the platform technically being more like 15 years old), it's a little dated, but even if I get another car at some point, I'd still like to keep this. Throughout the years, I had tested out other cars when they came out to see if I'd make the jump -- off the top of my head, more or less in chronological order, a 370Z, an Evo X GSR, a 3-Series, an IS200t -- and nothing really jumped at me or made me want to switch. My brother picked up a brand new 2015 320i in late 2014, and it's nice and has all the pickup you really need, but I was always very content with my car.

    Maintenance isn't cheap but it's nothing that I was ever concerned with. Other than the routine stuff -- synthetic oil changes every 3,750 miles, the usual 15k/30k/60k services -- all I ever did was replace the spark plugs and water pump during the 60k service (might as well) and then the radiator at 95k since there was a leak at the top. I changed out the pads at maybe 40k (and there was actually still a good amount left), so I'll probably change my pads and resurface the rotors soon, perhaps when I do the 15k service at 105k miles.

    This is my daily driver and I generally exercise pretty good self restraint, so the tires lasted pretty long. I swapped out the stock Advans at 25k (and they still had enough meat for someone to buy them off of me) for Z1 Star Specs, which I swapped out at 50k for V12 Evos (since I knew I was going to do a lot of weekend driving visiting my mom, who at the time was battling cancer, in Ventura County), which I swapped out at 92k for Pilot Super Sports.

    Similarly, gas mileage is decent. You can see my stats here:

    http://www.fuelly.com/car/mitsubishi...uuuts83/213105

    The lifetime average is 21.6 mpg, with my very best having been 32.2 mpg. I think I broke the 30 mpg maybe three times total, but obviously that's not necessarily the best representation of my highway mileage. They're sort of flukes, but I was able to do it a few times, so I guess I know what to do and what conditions I need if I want to see those numbers, though admittedly it's more for novelty.

    On that topic, I haven't updated my fuelly account since September, but my recent mileage has actually taken a fairly considerable drop recently. Any guesses on what it might be or what I should look at? I've checked the tire pressures, and the air filter looks fine. I've had the car long enough to notice when something changes, and it's definitely not my driving style or commute that changed. I first noticed a slight decrease around December of last year, but that was around when I did the 90k service and then changed the tires, but there's been a larger decrease recently. For someone who has broken 30 mpg, for me to barely hit 20 mpg last weekend on a tank that had maybe 75% highway driving (and not in conditions that would yield something lower, like traffic or fast acceleration) is a head scratcher, especially when I would normally expect that tank to have been somewhere around 22-23 mpg.

    Great car overall, and definitely one of my good decisions.

  2. #2
    Not So Newbie Coppi51's Avatar
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    Congrats, Yo...that's awesome. Even more impressive that you kept it stock...

    Some mornings as I'm on the 101 in Thousand Oaks I see a black S4 merging with plates "DeezNutzz" (give or take a letter or two). I always think: "Did he get something new?" haha

  3. #3
    Quote Originally Posted by Coppi51 View Post
    Congrats, Yo...that's awesome. Even more impressive that you kept it stock...

    Some mornings as I'm on the 101 in Thousand Oaks I see a black S4 merging with plates "DeezNutzz" (give or take a letter or two). I always think: "Did he get something new?" haha
    You mean this car?



    My brother commutes on the 101 as well (going from Oxnard to Thousand Oaks) and sent me that before.

    It was hard to keep it stock at first, as I had all these plans in my head when I first got this car (though it was my second Evo), though I ended up being between jobs shortly afterward and was just making sure I was able to pay for rent and the auto loan, and once I was working again, I didn't care about modding the car anymore. But it made me appreciate the car more for what it was, plus it's nice to know that it really strengthens its market value. I remember when the Evo Xs came out, the dealership offered me "maybe $23,000" as a trade-in around early 2008, and I think at that time I probably had maybe 10k miles. I remember running into Sam at the dealership a couple of years ago when the car probably had somewhere around 70k-80k miles, and he said if he had my car in his inventory, he was confident he could sell it for $29,000-30,000 by the end of the week.

  4. #4
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    Thanks for taking the time to write that, i thoroughly enjoyed it. Big ups to you for hanging onto the car and keeping it up. These are special cars, and as awesome as tuning them can be, it's a hell of a car right out of the box, and such a nice balance of compromise.

    Are you able to look at any of the data from the ECU, specifically primary o2 sensor voltage and/or fuel trims? I'm guessing that you do not have a wideband on the car. Anyway, I wonder where your fuel trims are at...i'm wondering if the primary o2 is going wonky for some reason...exhaust leak, dying sensor, etc...and increasing the fuel trims during closed loop. Could be a number of things but that's where my heads at anyway.

  5. #5
    Quote Originally Posted by Apex Hunter View Post
    Thanks for taking the time to write that, i thoroughly enjoyed it. Big ups to you for hanging onto the car and keeping it up. These are special cars, and as awesome as tuning them can be, it's a hell of a car right out of the box, and such a nice balance of compromise.
    I agree. I think my self-restraint in daily driving really helped me keep it stock, since I don't go nuts behind the wheel and just drive like a regular person most of the time, so when I do open it up, it seems fast to me.

    Quote Originally Posted by Apex Hunter View Post
    Are you able to look at any of the data from the ECU, specifically primary o2 sensor voltage and/or fuel trims? I'm guessing that you do not have a wideband on the car. Anyway, I wonder where your fuel trims are at...i'm wondering if the primary o2 is going wonky for some reason...exhaust leak, dying sensor, etc...and increasing the fuel trims during closed loop. Could be a number of things but that's where my heads at anyway.
    Since I stayed stock, I have never bothered to mess with any of that stuff and really didn't know where to start when it came down to diagnosing what might be causing any changes to fuel consumption beyond what I mentioned (tire pressure and air filter). Where should I go from here to look into that? I more or less get what you're saying, but I don't know how to address any of that stuff.

  6. #6
    Not So Newbie Coppi51's Avatar
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    Quote Originally Posted by DeeezNuuuts83 View Post
    You mean this car?



    .

    Lol...yup, that's the guy!

  7. #7
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    Quote Originally Posted by DeeezNuuuts83 View Post
    Since I stayed stock, I have never bothered to mess with any of that stuff and really didn't know where to start when it came down to diagnosing what might be causing any changes to fuel consumption beyond what I mentioned (tire pressure and air filter). Where should I go from here to look into that? I more or less get what you're saying, but I don't know how to address any of that stuff.
    I'm not sure what kind of tools you have access to, but a scan tool that has the ability to display this data from the ECU is what i was referring to. If you have any technician buddies, they might be worth an ask.
    You might consider taking it to one of Socal's Evo specialist shops and paying them diagnostic time. In the long run, this could be cheaper and less time consuming. My first recommendation would be RRE down in Santa Fe Springs as i've had really good experiences with those guys. Assuming you are up in the valley, i've heard good things about KT Motoring. You could have their tuner plug their laptop into it and just take a look, see if anything looks off. And then go from there.

  8. #8
    I was reading some stuff the other day, and I guess the MAF is something that gets dirty throughout ownership. Is that something that may have an (adverse) effect if it is dirty? I've never cleaned it.

  9. #9
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    Certainly a possibility, and it's pretty cheap and easy to do. Kinda unlikely unless you drive in some really dusty areas frequently or you have a K&N drop in that was over-oiled, but maybe worth a shot.

  10. #10
    Yeah, I've read that the aftermarket filters that get oiled sometimes dirty it up. I've always just had the regular factory air filters, so maybe it's not too likely of a cause but worth checking anyway.

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