Complete Fuel Cell Definitions needed...
Le Mans Master
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From: Burlington ON
Cruise-In I, II, III, IV & V Veteran
CI-I & II Auto-X Champ
Re: Complete Fuel Cell Definitions needed... (chuckster)
I dont believe anyone has truly figured out what all of them are... They just can speculate by graphs made from collected data...
Le Mans Master
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From: Admit Nothing, Deny Everything, Make Counter Accusations.
Re: Complete Fuel Cell Definitions needed... (chuckster)
Watch your car with a scanner like Autotap or Ease and you will be able to easily figure it out.
This can vary from year to year and transmission type so you have to check your own car.
This can vary from year to year and transmission type so you have to check your own car.
Burning Brakes
Joined: Jun 2000
Posts: 1,112
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From: Blue Springs MO
Re: Complete Fuel Cell Definitions needed... (chuckster)
I have a 2000. Here is what I have determined so far.
16 - Idle in Park with A/C on
17 - Idle in Park with A/C off
18 - Idle in gear with A/C on
19 - Idle in gear with A/C off
16 - Idle in Park with A/C on
17 - Idle in Park with A/C off
18 - Idle in gear with A/C on
19 - Idle in gear with A/C off
Le Mans Master
Joined: Mar 2001
Posts: 5,737
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From: Lincoln, CA
Re: Complete Fuel Cell Definitions needed... (Jim Shearer)
This info is from John at Team ZR1.
Non Load Cells 0 to 5 and 21
Idle Cells 17 to 20
Part Throttle Cells 6 to 14
WOT Cells 15 and 22
Average out the 6 thru 14 cells to see if the MAF signal needs adjusting.
He has a great write up on one of the other LS1 forums.
[Modified by ddawson, 11:16 AM 11/5/2002]
Non Load Cells 0 to 5 and 21
Idle Cells 17 to 20
Part Throttle Cells 6 to 14
WOT Cells 15 and 22
Average out the 6 thru 14 cells to see if the MAF signal needs adjusting.
He has a great write up on one of the other LS1 forums.
[Modified by ddawson, 11:16 AM 11/5/2002]
Thread Starter
Race Director
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From: Palm City Florida
Re: Complete Fuel Cell Definitions needed... (chuckster)
Ok here is what I was able to piece together so far.......
0 – Non Load
1 – Non Load
2 – Non Load
3 – Non Load
4 – Non Load
5 – Non Load
6 – Part Throttle
7 – Part Throttle
8 - Part Throttle
9 - Part Throttle
10 - Part Throttle
11 - Part Throttle
12 - Part Throttle
13 - Part Throttle
14 - Part Throttle
15 – WOT (Power Enrichment Mode)
16 - Idle in Park with A/C on
17 - Idle in Park with A/C off
18 - Idle in gear with A/C on
19 - Idle in gear with A/C off
20 – Idle Cell
21 – Deceleration Cell
22 – WOT (Power Enrichment Mode)
0 – Non Load
1 – Non Load
2 – Non Load
3 – Non Load
4 – Non Load
5 – Non Load
6 – Part Throttle
7 – Part Throttle
8 - Part Throttle
9 - Part Throttle
10 - Part Throttle
11 - Part Throttle
12 - Part Throttle
13 - Part Throttle
14 - Part Throttle
15 – WOT (Power Enrichment Mode)
16 - Idle in Park with A/C on
17 - Idle in Park with A/C off
18 - Idle in gear with A/C on
19 - Idle in gear with A/C off
20 – Idle Cell
21 – Deceleration Cell
22 – WOT (Power Enrichment Mode)
Le Mans Master
Joined: Jun 2001
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From: Admit Nothing, Deny Everything, Make Counter Accusations.
Re: Complete Fuel Cell Definitions needed... (chuckster)
As I said above you have to check your car. You cannot go by what others are posting because this varies from year to year and car to car.
I can tell you for a fact that your list is incorrect with respect to my car.
Monitor your own car and determine this for yourself.
I can tell you for a fact that your list is incorrect with respect to my car.
Monitor your own car and determine this for yourself.
Thread Starter
Race Director
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From: Palm City Florida
Re: Complete Fuel Cell Definitions needed... (rbartick)
Ok here is more... but I am dizzy from looking at Autotap data..
Corvette PCM Fuel Cell Information for 2000 MN6
0 – Non Load Decreasing Off Throttle Neutral Down to idle rpm and 0mph then switches to 18 or 19
1 – Non Load Decreasing Off Throttle
2 – Non Load 1500 –2000 rpm
3 – Non Load 2000-3000 rpm
4 – Non Load Off Throttle
5 – Non Load 800-1300 rpm
6 – Load 1400 – 2200 under 23% tps
7 – Load 2300 – 2700 under 25% tps
8 – Load 750 – 1000 rpm 17%
9 – Load 1000 – 1800 rpm 17% ?
10 – Load 1900 – 2500 rpm over 24% tps
11 – Load 2500 – 3500 rpm over 27% tps
12 - Load
13 - Load
14 – Load 2000 rpm over 30% tps
15 – WOT (Power Enrichment Mode) over 37% tps
16 - Idle in Park with A/C on
17 - Idle in Park with A/C off
18 - Idle in gear with A/C on
19 - Idle in gear with A/C off Per Idle Speed setting
20 – Idle Cell
21 – Deceleration Cell
22 – WOT (Power Enrichment Mode)
Load = Throttle Over 17% tps
Corvette PCM Fuel Cell Information for 2000 MN6
0 – Non Load Decreasing Off Throttle Neutral Down to idle rpm and 0mph then switches to 18 or 19
1 – Non Load Decreasing Off Throttle
2 – Non Load 1500 –2000 rpm
3 – Non Load 2000-3000 rpm
4 – Non Load Off Throttle
5 – Non Load 800-1300 rpm
6 – Load 1400 – 2200 under 23% tps
7 – Load 2300 – 2700 under 25% tps
8 – Load 750 – 1000 rpm 17%
9 – Load 1000 – 1800 rpm 17% ?
10 – Load 1900 – 2500 rpm over 24% tps
11 – Load 2500 – 3500 rpm over 27% tps
12 - Load
13 - Load
14 – Load 2000 rpm over 30% tps
15 – WOT (Power Enrichment Mode) over 37% tps
16 - Idle in Park with A/C on
17 - Idle in Park with A/C off
18 - Idle in gear with A/C on
19 - Idle in gear with A/C off Per Idle Speed setting
20 – Idle Cell
21 – Deceleration Cell
22 – WOT (Power Enrichment Mode)
Load = Throttle Over 17% tps
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Safety Car
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From: Plano TX
Re: Complete Fuel Cell Definitions needed... (chuckster)
Basically from John @ Team ZR-1. I don't know how it varies by vehicle. I've seen most cells on my car. Saw the Automatic Trans cells on a friend's 2000 C5.
FTC 0 - 5 are slight deceleration / little to no load
FTC 6 - 10 moderate load
FTC 11 - 15 higher load
FTC 16, Automatic transmission in "Park" or "Neutral", hot idle, a/c on
FTC 17, Automatic transmission in "Park" or "Neutral", hot idle, a/c off
FTC 18 hot idle, a/c on (Manual or Automatic transmission in "Drive")
FTC 19 hot idle, a/c off (Manual or Automatic transmission in "Drive")
FTC 20 cold idle, a/c on or off
FTC 21 is moderate deceleration / no load
FTC 22 is WOT
FTC 0 - 5 are slight deceleration / little to no load
FTC 6 - 10 moderate load
FTC 11 - 15 higher load
FTC 16, Automatic transmission in "Park" or "Neutral", hot idle, a/c on
FTC 17, Automatic transmission in "Park" or "Neutral", hot idle, a/c off
FTC 18 hot idle, a/c on (Manual or Automatic transmission in "Drive")
FTC 19 hot idle, a/c off (Manual or Automatic transmission in "Drive")
FTC 20 cold idle, a/c on or off
FTC 21 is moderate deceleration / no load
FTC 22 is WOT
Safety Car
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From: Murphy TX
Cruise-In II Veteran
Re: Complete Fuel Cell Definitions needed... (TooManyIDs)
Cells 0-15 haven't changed over the years, they are a rectangular array of cells indexed by RPM and MAP. 0 is low RPM low MAP, 3 is high RPM low MAP, 12 is high MAP low RPM, 15 is high MAP high RPM. You can figure out the actual cell boundaries by experimentation. (They appear to be linear in MAP and non-linear in RPM.) As a side note, you can see why you drop from cell 22 (WOT) to cell 15 from time to time if you allow for open loop hysteresis effects. Nobody ever seems to mention the MAP value required to enter open loop (or the hysteresis value that modulates staying there), often saying that TPS is the only trigger for WOT open loop.
The remaining cells are the tricky ones, Al has a good list in the post above that may or may not be right for all years. ;)
The remaining cells are the tricky ones, Al has a good list in the post above that may or may not be right for all years. ;)
Le Mans Master
Joined: Jun 2001
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From: Admit Nothing, Deny Everything, Make Counter Accusations.
Re: Complete Fuel Cell Definitions needed... (ToplessTexan)
Nobody ever seems to mention the MAP value required to enter open loop (or the hysteresis value that modulates staying there)
In addition WOT cell 22 can sometimes be entered at less than full throttle.
