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The only thing I could say would be full moving from the fuel pickup causing it to starve - but it'd be a different feeling - more of a fall on it's face type of feeling rather than slowness.

I'd actually think you'd experience the opposite as there is less weight in the vehicle making it easier to move.
 

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Maybe the way the tank pressurizes affects the ease at which the fuel pump can draw the fuel.

I am with GMTURBO43 - I notice a bit more pep when the tank is near empty, due to less weight.
 

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Hmm..didn't think of a pressure thing...

Here's an experiment. When the tank gets to half full (or empty) pull off the gas cap and put it back on (make sure it clicks 3 times). See if that makes a difference.
 

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I've noticed the ride is different with a full tank, but I've always figured it's the additional weight in the back.

Can't say I've noticed and acceleration difference, but considering how deceptive the CVT is to begin with, I wouldn't trust my senses there. I wonder if a GPS has enough resolution to capture the differences... You could accelerate from a known state, and look at the distance/time data points and plot them on a graph. To keep temperature and barometric pressure minimised, you'd have to do the empty tank first then fill it up and do the full one.
 

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We are still talking "feelings" not facts.

Get something that objectively measure acceleration. G-Tech would do.

I just cannot imagine that heavier car would be more responsive. It goes against physics. But then what do I know.....
 

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Full or near empty, The Gold Rush is much quicker after she's had a bath.

Probly the molecules are slicker.


Homer
 

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Kris said:
We are still talking "feelings" not facts.

Get something that objectively measure acceleration. G-Tech would do.

I just cannot imagine that heavier car would be more responsive. It goes against physics. But then what do I know.....
How much are they? I guess the problem I have with getting a G-Tech is while they would do the job very well, after I knew, I'd put it on the shelf.

A G-Tech rental for a day, would be good...
 

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Are you testing this with the engine and CVT at full operating temp? As you know the CVT is a bit sluggish until it warms up.
 

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I find the CVT to be sluggish on a cold start, so I find the car noticeably peppier when its warm.
 

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Eric L. said:
I find the CVT to be sluggish on a cold start, so I find the car noticeably peppier when its warm.
Same here....
 
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