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04-12-2013, 08:15 PM | #45 | |
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04-12-2013, 09:55 PM | #46 | ||
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Drives: '13 Z4 sDrive35i DCT
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06-03-2013, 09:29 PM | #47 |
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So no launch control on my '14 Z4 28i from what I gather???
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06-03-2013, 11:40 PM | #49 |
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06-04-2013, 01:01 AM | #51 |
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Only a week and you're already brake torque launching? When do we start neutral dropping
Kidding aside, I thought you could torque brake launch in all torque-converter automatics. Or does the F30 have a mode for it where the ECU limits you to 2,000RPM prior to the slip/launch. |
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06-04-2013, 01:57 AM | #52 | |
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F30 can spin the tires launching from 2000rpm so no need for anything more extreme. Too bad it runs out of power at higher speed though, like the E89.. It is so easy to get jaded and think 12lb/hp is insufficient Pretty sure it isn't software limit, just the stall on the torque converter. |
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06-04-2013, 03:59 AM | #53 |
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06-04-2013, 01:51 PM | #54 | |
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So not worth it to go through the potential hassles for such a limited benefit. I'd rather keep the car stock, REALLY drive it, and do driver modification |
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06-04-2013, 11:04 PM | #55 | |
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And this, guys, is why you never buy a former lease or loaner. |
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06-04-2013, 11:55 PM | #56 |
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I know you would enjoy the improved throttle/engine response even if you kept the car at OEM power. You wife might not like it though. You can't get a sensitive and comfortable throttle response at the same time. But now she has that nice 335i!
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06-05-2013, 01:47 AM | #57 |
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Yea, I don't know about that.. I don't get the point of messing with OEM computer tune if it doesn't make any more power. That seems so incredibly point less! (it is as bad as LC that isn't useful at launching the car because of all the wheelspin it allows )
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06-05-2013, 02:09 AM | #58 | |
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Wheelspin or not, I read here that using LC is actually better for the DCT than brake launching: http://www.m3post.com/forums/showthread.php?t=788999 |
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06-05-2013, 04:59 AM | #59 | |
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06-05-2013, 06:29 PM | #60 | |
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Two points 1) I think with drag radials he would break something else from driveline shock 2) he has SC so less torque than n54 with similar power. Seems like 6MT the way to go for big power |
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06-05-2013, 09:41 PM | #61 |
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[QUOTE=Asbjorn]And this is the same guy who does not want to tune his N54 due to quality/warranty concerns. [/
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06-05-2013, 10:42 PM | #62 |
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LOL you guys can't get over that eh? "break in" is controversial but you guys know the varying points of view.
As for the warranty, that's one of the key reasons I like getting new BMW so often. Fresh motor, free maintenance and warranty! I need to maximize my benefit otherwise if I'm going to be a granny I might as well buy used and save money |
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06-07-2013, 04:01 PM | #63 |
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Interesting info. Thanx for the read.
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06-03-2014, 03:06 AM | #65 |
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I find some of these comments about brake torqueing interesting due to the fact that the car keeps a record inside the ECU about the cars usage profile. For example BMW only warrant the use of launch control on the M series of cars to 5 during the whole warranty window. After this even if the car was still in warranty and anything failed then it was the buyers responsibility and very very expensive. Why does BMW do this? because the strain on components during a launch is massive, just because the car can do it does not mean it is good for the car!!!!
So the guys that insist on doing it make sure you don't own the car when it fails, even if in warranty!!!!!!! As with all things it is a person's choice!!! |
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06-03-2014, 12:30 PM | #66 | |
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Pretty ridiculous to have a feature, with safe guards (such as can't use during break in) and then use it as a warranty restrictor |
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