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Full Tank - Seems to pull stronger

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Old Nov 21, 2007 | 01:26 PM
  #51  
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From: (swartsnegga state)
Originally Posted by rglbegl
^^^ you have 2 tanks. How does your car react with a shallow N2O tank?
well, the zex solenoid automatically cuts nitrous injection if the tank is empty

when it's shallow you can feel the nitrous being shot unevenly, which means the car will have hesitations............
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Old Nov 21, 2007 | 02:43 PM
  #52  
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Originally Posted by Trekk
The best thing to do.. or at least what they say to do is...
1) fill up in the early morning when the gas is cooler and thicker.
2) try not to run less then a 1/2 tank cause the more air that is in the tank, the more your gas will evaporate.
isnt the gas stored at 15degrees celsius...at least that's what the pump says at my local Shell station. "volume corrected to 15degrees celsius"
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Old Nov 21, 2007 | 06:52 PM
  #53  
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Maybe so but what happens when you shoot that gas into a hot tank?
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Old Nov 22, 2007 | 01:16 AM
  #54  
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Originally Posted by gundarx
So filling up your tank to capacity will make your car slower b/c of the weight but to get the most power and response, try putting in only about 1/4 - 1/3 of gas in your tank....
why you make the most power and response when putting only about 1/4 - 1/3 of gas in the tank?

One factor is that you have less gas and less weight .

Any other factor for putting 1/4 - 1/3 of the tank capacity apart weight reduction?
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Old Nov 22, 2007 | 10:35 AM
  #55  
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Well less weight is always better.. I'm not suggesting at anything, but if you see what drag racers do just before a race (either use their gas tank until only about a quarter is left or use it all then fill up to about 1/4 or less with high octane gas), it's the same thing.

Fresh gas is always more potent than one that's been in your tank, say 1 week, unless the gas station is storing it bad. Motorbike riders (esp. scooters) notice this the most with their butt dyno

Everyone should fill up their tank to a level that they know they'll need or is convenient for them.
  • So if you're storing the car for winter, fill it up.
  • For long trips, of course fill it up.
  • If the gas station is next to your house and all you do is go to work and come home, you might as well not fill over 1/2 your tank so there's always less weight being carried around.

Also, more frequent filling has the advantage of getting fresh gas more often.
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Old Nov 22, 2007 | 10:52 AM
  #56  
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From: Mississauga, ON
Originally Posted by gundarx
Well less weight is always better.. I'm not suggesting at anything, but if you see what drag racers do just before a race (either use their gas tank until only about a quarter is left or use it all then fill up to about 1/4 or less with high octane gas), it's the same thing.

Fresh gas is always more potent than one that's been in your tank, say 1 week, unless the gas station is storing it bad. Motorbike riders (esp. scooters) notice this the most with their butt dyno

Everyone should fill up their tank to a level that they know they'll need or is convenient for them.
  • So if you're storing the car for winter, fill it up.
  • For long trips, of course fill it up.
  • If the gas station is next to your house and all you do is go to work and come home, you might as well not fill over 1/2 your tank so there's always less weight being carried around.

Also, more frequent filling has the advantage of getting fresh gas more often.
Why would you do that when you say stale gas is less potent?
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Old Nov 22, 2007 | 11:07 AM
  #57  
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From: Great America, IL
Originally Posted by Renesis07
isnt synthetic terrible for the engine, my dealership tells me that synthetic or 5w30 will void my warranty and tear apart the engine because synthetic breaks down at high temps and becomes too thin of oil for the rotary engine.
My salesman told me to use synthetic.
I told him I read otherwise.
He told me that using synthetic is what he was supposed to tell me.

I just did the airbox baffle delete about ten minutes ago and noticed my top end was smoother. Then I happened upon this thread and realized i'm 1/8 short of a full tank. Baffles or tank?
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Old Nov 22, 2007 | 11:08 AM
  #58  
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That's a different topic but I didn't want to insist on always filling in small amounts.

It's been discussed many times for storing your car in the winter that filling your gas tank is best to reduce any moisture buildup. If you're in that situation, might as well use Stabil too (so your gas doesn't expire as fast). It's a compromise, but you'd rather have a car with little response from old gas after the winter is over than have water being injected in the engine.
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Old Feb 12, 2008 | 11:00 PM
  #59  
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strange... you go faster when you put gas in... but i go faster if i fasten a brick to the bottom of my shoe when i gas it... interesting...
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Old Feb 13, 2008 | 09:14 AM
  #60  
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Originally Posted by rotaryPilot
Well,

I always wondering how come?

Always talking for performance in a straight line. How come every time I full up or almost full my tank the car seems to pull stronger?

Is it related to the fuel pressure ? Is it placebo? I would expect the opposite because a full tank means extra weight which means lower performance !
Actually, this is testable... and would be a nice little experiment for some psych major:

Subjects would show up with their cars, tanks 1/4 full. They'd get out and give the car to a tester, who would drive it to a gas station and then bring it back - gas gauge taped over. Half the cars would be filled up; half wouldn't get any gas. Subject wouldn't know if the tank had been filled or not.

Subject takes his car for a test drive and then has to indicate whether he thinks tank was filled... or wasn't.
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Old Feb 13, 2008 | 09:30 AM
  #61  
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Originally Posted by Trekk
The best thing to do.. or at least what they say to do is...
1) fill up in the early morning when the gas is cooler and thicker.
2) try not to run less then a 1/2 tank cause the more air that is in the tank, the more your gas will evaporate.
Wrong

1) That was the old days. Gas is regulared by elect. meters. They will heat the gas up to a certain temp. Yiu can tell when handle gets warm. The gas companies aren't going to loose any money.

2) Unless your tank is a weird shape. The cubic inches that are exposed to air air is relatively the same. So same evaporation. You'd have to have an inverted "V" to see your affect. "^"
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Old Feb 13, 2008 | 09:51 AM
  #62  
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I find myself more likely to WOT during the first quarter of a tank, so the car tends to be quicker for the first quarter of a tank. nothing to do with increased horsepower though.

Last edited by Socket7; Feb 13, 2008 at 11:54 PM.
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Old Feb 13, 2008 | 08:16 PM
  #63  
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Lightbulb

Originally Posted by rotaryPilot
Well,

I always wondering how come?

Always talking for performance in a straight line. How come every time I full up or almost full my tank the car seems to pull stronger?

Is it related to the fuel pressure ? Is it placebo? I would expect the opposite because a full tank means extra weight which means lower performance !

Originally Posted by enforcer
Theres no scientific evidence I'm aware of to back that claim up....
True. However, I am new to the 6 speed and this is my 3rd full tank and too am experiencing this.

Originally Posted by c0ldf1ame
more fuel pressure?
Dont know? Could be. After all some guys on the track suffer from fuel starvation when low on fuel that is.
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Old Feb 13, 2008 | 09:45 PM
  #64  
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Maybe its because you drive just a little bit harder when you have a full tank as opposed to say 1/4 of a tank
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Old Feb 13, 2008 | 09:55 PM
  #65  
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From: Cali
Maybe his BUTT dyno is off.

Ever think of that?
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Old Feb 13, 2008 | 09:57 PM
  #66  
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Talking

Whats a "Butt Dyno"? When you get this?
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Old Feb 13, 2008 | 10:32 PM
  #67  
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Originally Posted by c0ldf1ame
more fuel pressure?
hahaha nice.
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Old Feb 13, 2008 | 11:20 PM
  #68  
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i don't know, i've been driving the car for over 4 years, and it's always seemed that way to me too. Definitely seems to pull stronger after being freshly fueled.
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Old Feb 13, 2008 | 11:41 PM
  #69  
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I don't know but I drive the car hard when it's on full and when it's about to just stop because of no gas.. I get the same performance..

But on some fill ups, I do get that bonus push.. Like +10 hp added.
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Old Feb 14, 2008 | 11:10 AM
  #70  
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didnt someone post that fresh gas is more potent?

ok. question answered.
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