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Discussion Starter · #1 ·
My car drives awesome with a full tank of gas then it does with 1/2 of one. I think it has a sensor and knows when you fill up. Anyone know or have had computer programmed to trick it so it runs good all the time?

BTW. Its only a setptronic thing. It just the way it shifts in step after I fill up.
 

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shouldnt u feel it driving better with the 1/2 tank? I mean the car is lighter with 1/2 a tank than a full one. My car drives awesome when there is less than a quarter tank full. You can really feel that it is much lighter than the day u had a full tank.
 

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Discussion Starter · #3 ·
well mine is not like that at all. Its just how if shifts is what I like. Its like gas guzzling mode I think.
 

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Discussion Starter · #5 ·
see I thought it was psychological too until yesterday my friend said the car was driving better after I got gas....
 

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Maybe it's the gas. My old 325is used to be sluggish if I bought premium gas at Valero and would haul ass if I got premium at Chevron. I don't have enough experience in the new 330Ci but I am only using Chevron for gas now.
 

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My car drives a LOT better without a full tank. In fact, sometimes for the hell of it I will only put half a tank, just because I like it better, with less gas.

Each gallon weighs about 8 pounds, so its not a huge difference, but definitely noticeable, and funner with less gas.
 
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