Thread: 6mt vs 8 auto
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      12-16-2012, 11:07 AM   #19
logiclee
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Drives: BMW 116i
Join Date: Aug 2012
Location: Notts, UK

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Quote:
Originally Posted by ovekvam View Post
These engines don't have throttle valves, like old cars. There is a motor actuating the eccentric shafts in the Valvetronic mechanism. When driving the N13, I think the initial response is pretty quick. The lag you notice is due to the turbo taking time to build up pressure. The flywheel is also a bit too heavy, making the engine rev up (and particularly down) rather slowly. The pedal is not to blame.
Although there is some lag it's very limited and certainly one of the least laggy petrol turbo's I've driven.

I still think there is an issue with the pedal mapping. In Eco Pro mode there's absolutely no connection between how much pedal you use and how much response you get.
In Comfort it's better but you still press the pedal an inch or two and then wait for the engine to catch up. Sport mode throttle response feels about right to me but then you also get the Sports Steering, Gear Changes and Chassis response depending on spec.

Cheers
Lee
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