06-26-2015, 03:16 AM | #45 | |
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Bit of a stretch, don't you think
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Personally I like to drive a responsive car, even when I'm only driving it slowly. What I hate about Eco Pro is the way it changes controls, so the car feels not only loose and sloppy but also I've no longer any idea how much throttle to dose to adjust my speed. Its generally a lot more than I was expecting so Eco Pro takes my educated right foot and turns every throttle adjustment into a conscious movement. Eco pro actually trains you to become heavy footed. As I stated in my post above, the only good thing about Eco Pro is that it collects all the economy measures together under 1 button, which you can easily avoid using |
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06-26-2015, 10:56 AM | #46 |
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I didn't buy an M135i to save the planet but I do drive it in Eco Pro around towns / cities all the time and find it to be just fine. If you need a sudden spurt then just plant your foot or switch yourself into a higher driving mode. It's no big deal. Passengers tend to appreciate the eco pro driving style...
Obviously the rest of the time I'm driving around in Sport / Sport+ ![]()
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06-26-2015, 02:57 PM | #47 |
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I think it's a case of getting used to Eco Pro - I have in the X5 and whilst it does totally change the character of the car once you understand what it's trying to do it's definitely acceptable. Having said that I love the sport plus in the X5 - it's epic and even makes the engine sound better!!
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06-26-2015, 11:58 PM | #48 |
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Understand what its trying to do.....Hmmm, U
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06-27-2015, 04:11 AM | #49 | |
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Yeah that's all it is
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06-27-2015, 05:53 PM | #50 | |
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The car is of course much better in sport or sport plus - but don't knock Eco-pro it's another option for owners to use. If you don't like it don't press the button - plenty will however! |
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06-27-2015, 09:11 PM | #51 |
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It's all make believe marketing Eco Pro.
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06-28-2015, 10:37 AM | #52 | |
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![]() ![]() ![]() Acceleration-wise, I don't seem to experience really much of degradation - when flat down it feels fairly much the same as in the Sport+ I always use. I fortunately miss the adaptive steering (Servotronic), suspension and gearbox ![]() Regarding one button. I have to push two in fact: to activate the mode and to disable the engine auto stop/start Eco Pro implies - when slow rolling you never know if shutting the engine makes sense. What is a bit annoying is that I can't engage the auto stop/start just in place when I'm stuck with the traffic light: it takes some motion first to start working. I always drive in Sport+: the Comfort feels sloppy, no need for tight Sport traction, and the DSC OFF (besides implying the Comfort throttle ![]() ![]() ![]() |
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07-01-2015, 02:14 AM | #53 |
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This is so true and my experience with some BMW's and the 1 series. I've been driving around in Sport Mode with my new 116i (now a 118i due to BMW changing the badge on new face-lift 1 series) and the car just fly's and very responsive like a go-cart. I did try comfort mode for awhile but the slug was embarrassing to drive.
"Mazda MX-5 Program Manager Nobuhiro Yamamoto has revealed the roadster won't be getting any high-performance variants. Speaking to Top Gear at the Goodwood Festival of Speed, Yamamoto said "It's important not to get hung up on numbers" because "the driving experience and feeling is more important than power" |
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07-01-2015, 02:50 AM | #54 | |
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And the N13 engine is nowhere near the response of a natually aspirated gokart. It has lots of turbo lag. |
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07-01-2015, 03:45 AM | #55 | |
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07-01-2015, 04:03 AM | #56 |
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I guess it should be possible to measure this over OBD2, by logging throttle input and turbo boost pressure. Then we can compare Comfort Mode and Sport Mode.
A properly tuned gokart will respond just as fast as you can push the throttle down. The lag on the N13 feels like around a second or so. In autoX, I lose approximately one second per hairpin turn to the naturally aspirated cars because of this. If the course has five hairpins, I will be five seconds behind. Not good in a sport where the top cars are seperated by tenths or hundreths of a second. |
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07-01-2015, 04:28 AM | #57 | |
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Owners have to get past the micro dollar saving and enjoy BMW's in Sport mode. Go-Kart is the only way I can explain Sports Mode. I don't know what else I can compare the 116i too. The 116i even spins its rear tires for a split second on some surfaces when putting the foot down a little more than normal.
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07-01-2015, 06:02 AM | #58 | |
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In our 116i, I can not really tell a difference when it comes to turbo lag in Sport or Comfort. I guess we need some data logging to see if I am right or not. It feels like around a second in Sport Mode as well. In Eco Pro Mode, the throttle response is significantly slower, and the power seems to be reduced too. I drove a new Fiesta 1 litre turbo recently. It had around 2 seconds of turbo lag, so I guess the BMW is still pretty good compared to other turbo cars. |
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07-01-2015, 07:49 AM | #59 |
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I usually drive around in the Sport because of the throttle response. I put the car back in ECO PRO. Lasted about two seconds before I hated it. And this is in a 125i, so I can't imagine a 116..
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07-01-2015, 07:51 AM | #60 |
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He's right, it's like the sport button on the E46 M3. It just opens the throttle bodies more but it doesn't necessarily give the car more power. It feels that way I know, but in reality it ain't.
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07-01-2015, 09:09 AM | #61 |
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The turbo lag comes from dropping the revs, doesn't it? I noticed that once I've stepped off the accelerator it feels like I have time for a cup of tea before the engine pulls after stepping on again.
"Don't let the revs go down on me": it's interesting to operate the engine properly to explore it's full potential rather than stupidly invest into more power to present just a part of it (effectively) as "a lot" compared to the weaker ![]() Regarding noticing or not noticing the lag with the same engine. Besides personal perception and driving style it could be the gearbox (manual 6 against auto 8) that matters too. When I drove an auto (new/current) 320i loaner I noticed quite a difference about kickdown from my manual 118i: in "Sport and Sport" (the "car and gearbox" modes) the 320i took a breath ![]() ![]() ![]() ![]() |
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07-01-2015, 10:44 AM | #62 | |
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07-01-2015, 10:49 AM | #63 |
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The turbo lag is present at all engine speeds. The turbo is driven by exhaust energy, and when you go off the throttle, the intake valves are closed. This causes the exhaust flow to stop, and the turbo will spool down. Excess pressure is let out by a valve. Eventually the turbo will be spinning very slowly. Once you go back on the throttle, it has to spin itself up again, and this takes time. At high RPM, you have more exhaust flow, so it will spin itself up faster. The engine will also need more air from the turbo at high RPM, so it needs to spin up to a very high speed to produce boost.
To test turbo lag, go off the throttle a few seconds, and then floor it. Notice how long time it takes from you hit the throttle to the engine is at full power for the given RPM. |
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07-01-2015, 11:39 AM | #64 |
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All right, accepted: not exactly engine RPM but rather throttle (the turbine's RPM in fact).
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07-01-2015, 11:51 AM | #65 | |
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One way to avoid turbo lag coming out of corners, is to use left foot braking, as in braking with you left foot while keeping the throttle pedal floored. Once again, mostly for rally use, and not recommended for public traffic! ![]() |
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07-01-2015, 12:26 PM | #66 | |
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