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Acceleration "burst" at 105 kmh
Posted: Mon Apr 28, 2008 1:41 am
by valjea00
Hello everyone, I own a 2005 Vibe with 5sp. Not a GT. When I'm driving on the highway, i feel an acceleration burst (nothing to break you neck..) Feels the sames as a lockup clutch engagement on an automatic transmission. Obviously I don't have a lockup on a MT. Any ideas? Nothing wrong with this I just wonder if this threshold inidicates something (like optimal driving speed...) I'm an engineer so I do tend to overanalyze.
Posted: Mon Apr 28, 2008 6:48 am
by WaveAction
it's never happened to me and i own a 2007 5 speed
Re: (WaveAction)
Posted: Mon Apr 28, 2008 7:25 am
by kunkstyle
That's the secret speed band where the uber-hidden twin turbo kicks in. GM designers put it in there as an 'easter-egg' of sorts.On a more serious note, I'd assume it just happens to be where you are on your rpm range.
Re: Acceleration "burst" at 105 kmh (valjea00)
Posted: Mon Apr 28, 2008 7:54 am
by Raven
Check your RPM. 3000ish. That's where the torque curve steepens. AKA "The sweet spot". You'll feel it in all gears at around the same RPM.
Posted: Mon Apr 28, 2008 12:56 pm
by Celtic_Curse
What gear are you in.