VVTI acceleration lag?
- Thread starter Jono8
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I thought "lift" was some stupid internet fanboy expression? My valves have got lift as well, and I have a Fiat engine.
Dunno. But Toyota's VVTL-i... the L stands for "lift", the I for "intelligence". Don't really know much more than that.
VVTi is pretty much a feature on all Toyota engines. It just means variable valve timing.
edit: damn, beaten...
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Soldato
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VVTI isn't like old VVT.
For example, my car simply winds on 20 degrees more advance on the inlet cam once it's passed 3500RPM, you notice a kick as it passes this.
but VVTI is fully variable cam angle (is it?), which is part of the ECU map, so it the cam could be anywhere for all we know, maybe it tries not to use fuel for a bit, then realises you want to go fast, and tries to give you power now, hence the delay.
For example, my car simply winds on 20 degrees more advance on the inlet cam once it's passed 3500RPM, you notice a kick as it passes this.
but VVTI is fully variable cam angle (is it?), which is part of the ECU map, so it the cam could be anywhere for all we know, maybe it tries not to use fuel for a bit, then realises you want to go fast, and tries to give you power now, hence the delay.
Soldato
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Woo, new clutch done. Driving like a dream now
many thanks to those of you who actually helped.
good stuff
Not everyone 'knows' about cars.
Well i knew what it was doing, just not what was causing it. Seen as i had never come across it whilst driving before, how would i know or of had any need to find out? Did you know what a slipping clutch was before you had ever experienced it....?
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It's very, very obvious when a clutch is slipping though.
Yes - when I was 17, my first car was a crap Fiat which soon after I bought it, the clutch started slipping.
I think that is why I and some others assumed there would be another explanation (such as your car not being that quick) because we understandably assumed that a slipping clutch would be obvious to the driver.
well, not if a driver has never experienced one before.
