Quote:
Originally Posted by Icarium81
Floor it and take your foot off, it's as dull and winter witted as any other automatic I've driven. It sits at 5 to 7k and just let's it wind down.
I wouldn't mind one bit IF there was any sort of engine drag caused by doing so, but it just seems to coast along and let the rpm go down as it will.
Please tell me this isn't normal. I'd hate to think that this is the best one of the performance auto makers can do.
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Normal... Note the following description for the ZF 8HP gearbox.
Quote:
Rapid retraction of the accelerator pedal
This function can change the basic map depending on the speed with which the foot is taken off the accelerator pedal. For this reason, the determined accelerator pedal speed value is compared with threshold values that are saved in the control unit. This comparison leads to delayed upshifts and it also avoids (multiple) upshifts.
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It is purposely waiting (upshift suppression) your next command. Perhaps better explained for the ZF 6HP gearbox.
Quote:
Braking deceleration and automatic upshift
To decelerate the vehicle, the foot is taken off the gas and the brake depressed as necessary. The gearshift map triggers an upshift when the throttle is closed. These gearshifts are not necessary in conjunction with brake applications as they prevent the engine's braking effect from being exploited.
The intention to apply the brakes can often be anticipated from the accelerator pedal being rapidly released to the zero position. If such an action is detected, the upshift is suppressed for as long as the accelerator pedal is in the zero position and the vehicle is in overrun mode.
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Simply
not taking the foot rapidly off the accelerator to the zero position, allows for expected upshifts.
Quote:
Originally Posted by Icarium81
Gen13,I'm not expecting it to brake like an 18 wheeler, but I do expect something more that an easy coasting when it's winding down from 6 or 7k.
I've downshifted to 1st as well and it is a bit more than no engine braking, but it seems to be much less forceful than any other car I've driven.
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The engine has valvetronic, so there can be little natural engine braking, due to low pumping losses.