10-16-2019, 02:51 PM | #45 |
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Drag raced an x3m last month at 1 day m school in thermal. Brake boosted 2.5k rpm there was still lag in 1st gear, the car felt lack in power until 2nd gear.
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10-16-2019, 04:09 PM | #46 | ||
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10-16-2019, 05:47 PM | #47 |
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I agree it's totally weird. But after the test drive I though 'this is not quite as fast as my M4, but I can maybe live with it for the extra engagement'. But the interior felt kinda dated and I *really* missed seeing information in the HUD. I think if I'd been test driving it on the track then the more lively handling would perhaps have overcome the downsides, but the M Town Tour testdrive route was almost entirely on busy roads and you really don't get a feel for a car in 20 minutes of trying to avoid the traffic.
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10-17-2019, 09:22 AM | #48 | |
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10-17-2019, 10:32 AM | #49 | |
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11-14-2019, 09:51 AM | #50 |
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As an owner of a X3Mcomp the lag was terrible when new. After first service it got better. When moving the throttle to sport or sport plus it improves significantly. After 8000 miles it has really improved. It stills shows its ugly head from time to time but in 40-60 degree weather, when warmed up it is a rocket. I am certain some of it is tuning to protect the trans from all the torque, and also the engine was clearly designed for the lighter M3/M4. Alpina uses the engine in the B3 and B4 that is coming but changes the tune for more torque and less hp. My guess is that would have been perfect for the X3M. Any questions feel free to message me. And no I am not a rookie, having owned 3 M6 vehicles, F85 X5M and now awaiting delivery of my new m8 comp.
Peace, Noushy
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11-17-2019, 07:52 PM | #51 |
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All turbo cars don't have lag. Have you driven the new 2020 GTS 53 Mercedes? A turbo 6 cylinder which uses an electric motor to spool the turbo's, basically getting rid of all turbo lag at least noticeable to the driver.
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11-17-2019, 07:55 PM | #52 | |
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11-18-2019, 11:11 PM | #53 |
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Lets not forget the Shelby CSX VNT and much much later the 997 Turbo VNT.
I wonder if a VNT setup with perhaps a bit more lag is a better option than adding some weight (50kg?) for a 48v setup for an electric turbo
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