IS THIS TRUE OR NOT???
Thread Starter
Instructor
Joined: Oct 2002
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From: whittier CA
IS THIS TRUE OR NOT???
I heard from a reliable source that on the Corvettes, (possibly othe made GM cars) that when these cars get BELOW 1/2 a tank of gas that the timing curve is NOT as strong as when the car had over a 1/2 tank of gas.
He said that when he races he ALWAYS races with OVER 1/2 tank of gas. whatya guys think of this? i tend to believe this
He said that when he races he ALWAYS races with OVER 1/2 tank of gas. whatya guys think of this? i tend to believe this
Premium Supporting Vendor
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From: Central Jersey
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Re: IS THIS TRUE OR NOT??? (A Z06 In CA)
I have heard that from someone before but I do not buy it. I have had my cars on scanners many times over and under 1/2 tanks of gas and I never noticed the timing change. The LS1 edit program has no provisions relating to fuel level. I am not saying this cant be true but I have yet to see any evidence from my end :seeya :seeya
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From: Gone
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St. Jude Donor '03
Re: IS THIS TRUE OR NOT??? (A Z06 In CA)
I find it difficult to believe.
They can't even make a tank sender unit that knows if it's full or empty, how on earth would it know when it's at half? :confused: :D
:cheers:
They can't even make a tank sender unit that knows if it's full or empty, how on earth would it know when it's at half? :confused: :D
:cheers:
Melting Slicks
Joined: Feb 2002
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From: Kansas City Missouri
Re: IS THIS TRUE OR NOT??? (Y2Kvert4me)
I find it difficult to believe.
They can't even make a tank sender unit that knows if it's full or empty, how on earth would it know when it's at half? :confused: :D
:cheers:
They can't even make a tank sender unit that knows if it's full or empty, how on earth would it know when it's at half? :confused: :D
:cheers:
Thread Starter
Instructor
Joined: Oct 2002
Posts: 163
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From: whittier CA
Re: IS THIS TRUE OR NOT??? (A Z06 In CA)
So is this basically a false statement? This source makes a popular intake for the C5's (starting with the letter "V" ;) ) and he says that he has talked with GM about it.
Team Owner
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From: San Jose/Bear Valley CA
CA Events Coordinator
Re: IS THIS TRUE OR NOT??? (A Z06 In CA)
the only reason I can think of to have a full tank of fuel before going out on the track... is on a Road Course.. So you dont run out while hammering the gas pedal!! :crazy:
vetterdstr :cheers:
vetterdstr :cheers:
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Re: IS THIS TRUE OR NOT??? (A Z06 In CA)
What I've heard from a VERY reliable source is that when you add around 5 or more gallons to your tank, it will reset your timing table.
JB
JB
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From: Humble, Tx
Re: IS THIS TRUE OR NOT??? (wallstAL)
Well what I heard......
actually, a freind said that a reputable tuner told him that if you have some less than desirable gas and get some pinging or knock, the sensors will pick that up and the PCM will switch to a "bad gas" timing table until you add 5 gallons or more, then it will reset. This is apparently to protect your motor in case you do get bad gas.....
actually, a freind said that a reputable tuner told him that if you have some less than desirable gas and get some pinging or knock, the sensors will pick that up and the PCM will switch to a "bad gas" timing table until you add 5 gallons or more, then it will reset. This is apparently to protect your motor in case you do get bad gas.....
Team Owner
Joined: Sep 2001
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From: Lake Elsinore, CA
Re: IS THIS TRUE OR NOT??? (Y2Kvert4me)
I find it difficult to believe.
They can't even make a tank sender unit that knows if it's full or empty, how on earth would it know when it's at half? :confused: :D
:cheers:
They can't even make a tank sender unit that knows if it's full or empty, how on earth would it know when it's at half? :confused: :D
:cheers:
:lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol:
Melting Slicks
Joined: Jul 2001
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From: not speeding just flying low
Re: IS THIS TRUE OR NOT??? (Z06 Quin)
What Quin said is what I told him! :D Except I think it is approximately 4 gallons. It is a bad gas time table.
I think either you or the person you talked to misunderstood or misstated the reason he fills up before going to the track. It would make sense to add gas right before going to the track to make sure you are reset to the most aggressive time table. Of course, if you get bad gas, you will end up on the bad gas timetable anyway. My bad gas timetable has been eliminated by making it the same numbers as the normal table via ls1 edit. I absolutely cannot use anything but super in my tank, and I have to be careful about detonation. If I get any detonation, I will have to drain my gas and put some new gas in. Sometimes the knock sensors can think you have bad gas when you don't and you end up on the bad gas table. This is not good from a performance standpoint, so that is why mine has been eliminated.
I hope this clears it up. That is what I know. I am sure others know more, and they are free to correct me if I'm wrong! :jester :seeya
I think either you or the person you talked to misunderstood or misstated the reason he fills up before going to the track. It would make sense to add gas right before going to the track to make sure you are reset to the most aggressive time table. Of course, if you get bad gas, you will end up on the bad gas timetable anyway. My bad gas timetable has been eliminated by making it the same numbers as the normal table via ls1 edit. I absolutely cannot use anything but super in my tank, and I have to be careful about detonation. If I get any detonation, I will have to drain my gas and put some new gas in. Sometimes the knock sensors can think you have bad gas when you don't and you end up on the bad gas table. This is not good from a performance standpoint, so that is why mine has been eliminated.
I hope this clears it up. That is what I know. I am sure others know more, and they are free to correct me if I'm wrong! :jester :seeya
Le Mans Master
Joined: Aug 2001
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From: Arizona
Re: IS THIS TRUE OR NOT??? (Patches)
I find it difficult to believe.
They can't even make a tank sender unit that knows if it's full or empty, how on earth would it know when it's at half? :confused: :D
:cheers:
:lolg: :lolg: :lolg: :lolg: :lolg: :rofl: :rofl: :rofl: :rofl: :rofl:
:lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol:
They can't even make a tank sender unit that knows if it's full or empty, how on earth would it know when it's at half? :confused: :D
:cheers:
:lolg: :lolg: :lolg: :lolg: :lolg: :rofl: :rofl: :rofl: :rofl: :rofl:
:lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol:
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From: Athens Ohio
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Re: IS THIS TRUE OR NOT??? (rrobert22)
I find it difficult to believe.
They can't even make a tank sender unit that knows if it's full or empty, how on earth would it know when it's at half? :confused: :D
:cheers:
:withstupid: :lol:
They can't even make a tank sender unit that knows if it's full or empty, how on earth would it know when it's at half? :confused: :D
:cheers:
:withstupid: :lol:
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From: Charlotte NC
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Re: IS THIS TRUE OR NOT??? (Mark 84ltblu)
I find it difficult to believe.
They can't even make a tank sender unit that knows if it's full or empty, how on earth would it know when it's at half? :confused: :D
:cheers:
:withstupid: :lol:
:iagree: :lol: :lol: :lol: :lol:
They can't even make a tank sender unit that knows if it's full or empty, how on earth would it know when it's at half? :confused: :D
:cheers:
:withstupid: :lol:
:iagree: :lol: :lol: :lol: :lol:
Pro
Joined: Oct 2002
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From: Ridgeland MS
Re: IS THIS TRUE OR NOT??? (Z06 Quin)
Well what I heard......
actually, a freind said that a reputable tuner told him that if you have some less than desirable gas and get some pinging or knock, the sensors will pick that up and the PCM will switch to a "bad gas" timing table until you add 5 gallons or more, then it will reset. This is apparently to protect your motor in case you do get bad gas.....
actually, a freind said that a reputable tuner told him that if you have some less than desirable gas and get some pinging or knock, the sensors will pick that up and the PCM will switch to a "bad gas" timing table until you add 5 gallons or more, then it will reset. This is apparently to protect your motor in case you do get bad gas.....
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From: PA
Re: IS THIS TRUE OR NOT??? (Carsnob)
To be totally honest, I've always thought my car ran stronger on a full tank as opposed to when it starts getting low. I can't actually pinpoint it to >half tank, but it just seems to have more kick at 3/4 and above. :confused: Maybe it's just the same internal meter that makes it feel like your car is faster after you remove the MAF screens. :lol:
[Modified by QuickSilver97, 1:38 PM 2/11/2003]
[Modified by QuickSilver97, 1:38 PM 2/11/2003]