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Pulling power (335d)
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11-04-2007, 05:17 PM | #23 |
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the looser the faster, you should know that BB
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11-04-2007, 05:23 PM | #24 |
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11-04-2007, 06:05 PM | #25 |
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11-04-2007, 06:13 PM | #26 | ||
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Yep, me too. First time I've had some in ages and it's having a disproportionate (I'll be amazed if that's spelled correctly) effect.... |
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11-05-2007, 03:19 AM | #27 | |
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In colder weather diesels seem to get a bit more clattery and less free revving. In contrast petrol cars love the cold air and gain a definite performance edge compared to high summer temperatures. You are probably also getting more used to the car now and will be better placed to let rip and enjoy the performance. |
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11-05-2007, 03:47 AM | #28 |
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i agree to an extent NFS, still a turbod engine so therefore decent cold air feed will help!!
also worth noting, Shell V-Power diesel is Bio-diesel mix (think its bio-diesel, i forget right now) and on the fuel filler cap it says ''strictly no Bio-Diesel) Carlos
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11-05-2007, 05:07 AM | #29 | |
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Carlos, V-Power is NOT Bio-Diesel, and they are at pains to state this in their literature.
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11-05-2007, 05:08 AM | #30 | |
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Carlos
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11-05-2007, 05:17 AM | #31 |
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Nah, it's effectively starting from LPG and working backwards, rather than the standard stuff of starting with crude and splitting off the various fractions.
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11-05-2007, 05:18 AM | #32 |
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oh right, so it has not even a tiny bit of bio diesel in it then?
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11-05-2007, 05:25 AM | #33 |
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Not according to the literature I've got at home somewhere. It definately stated no bio-diesel. I made sure of that before stuffing any in.
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11-05-2007, 05:40 AM | #34 |
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oh ok, i will try find the information i read on it?!
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11-05-2007, 06:53 AM | #35 |
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BB - Your increase in pulling power could be associated with the adaptive software in the ECU and gearbox. This is supposed to learn your driving style and respond accordingly. The softer programmes are usually geared towards economy and the harder ones obviously geared to performance. You may find that the ECU has altered to suit your racey style
The Audi engines of a few years ago used to have an economy or performance mode. I used to do a lot of slow urban driving at that time and when ever the car was serviced it defaulted back to performance from economy which always was a surprise (nice). I later found out you could reset it yourself. Finally, I also have a conspiracy theory regarding the BMW ECU after my experience with an E60 525d. It seemed to increase in performance and flexibility in step changes over the first few thousand miles. I am convinced (probably incorrectly) that there is some sort of enforced running-in programmed into the ECU and that it increases available performance at set intervals. If this is true then hitting 5000 km may allow you to access more performance.
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11-05-2007, 06:57 AM | #36 | |
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Hi JwBMW, i dont agree with the pre-set limits for running in.. Bmw would have this made known if it that the case.. after 100 miles i was thrashing the 335d and it felt quick.. it has noticebly loosened up after many thousands of miles but, it is just that ''loosened up''. Not a ecu programed ''Running in process'' Carlos
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11-05-2007, 07:03 AM | #37 |
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Paul, you are quite right, new ring would tighten things up, and lubrication is obviously paramount at this point. Diesels generally have two oil 'scraper' rings don't they - hmmm..... now just relax
Last edited by beemerbird; 11-05-2007 at 11:50 AM.. |
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11-05-2007, 07:14 AM | #38 | |
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So, there could be a sort of 'area 51' thing going on with BMW? Maybe need to send an agent out to investigate. The forums own X files (actually parts of this forum are already X rated & it's nowt to do with me either) |
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11-05-2007, 08:37 AM | #39 | |
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Instead each driver selected gearbox mode (d or ds) has 2 sub modes (economy and extreme economy for D and sport and extreme sport for DS). The gearbox controller reads data from the DSC+ system monitoring turning forces, braking and acceleration to choose the appropriate sub mode. The system resets every time you come to a complete halt. |
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11-05-2007, 01:07 PM | #40 | |
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11-05-2007, 01:41 PM | #41 | |
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Thanks, the step changes are too marked to be normal programme variations from my experience, and my baby is definitiely throttled back in comparison to the higher mileage ones I have driven. I shall keep a note of what happens at 5k km / 3k miles
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11-05-2007, 02:52 PM | #42 | |
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11-05-2007, 03:16 PM | #43 |
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OK Carlos dear, I will reply. Firstly I've demoted John, he's actually the Sales Manager whom I have got to know quite well. He's always worked in the motor industry and genuinely enjoys his job because of his love of cars, specifically BMW's. He does acutally know alot about cars and keeps up to date with new technology. His answer re. the ECU was given unprompted apparently. He also said that this is why he tells customers that the car doesn't need running in, apart from brakes & tyres initially. I do not know enough about all this stuff TBH but surely the technology could be in place for this scenario to take place?
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11-05-2007, 03:16 PM | #44 |
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silwah??? Our American cousins will be wondering what you are on about Carlos....
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