With HP Tuner what do the VE Numbers mean?
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From: Shelby Twp. Mich
With HP Tuner what do the VE Numbers mean? I was wondering how to read numbers,in colunms 400 ,800 and 1200 what is the lower the number mean ,more air or more fuel? 
TIA
TIA 
The numbers are percentages. If you have a 6.0 liter engine running at 50% volumetric efficiency, it will flow 3.0 liters of air every two revolutions. If you put in a lower number, you are telling the computer to expect less air, and therefore to add less fuel.
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From: Texas
So when I make changes on step #4, does it really mean multiply? or do I multiply .60 which would be 60% of the value?
1. Idle Limiters --> Idle Speed: 950
2. Idle Limiters --> IAC Park Position: Raise all points from 40C and up to 21
3. Idle Limiters --> Idle Air In Gear: All points 60C and up to 8.6
4. Fuel --> Main VE Table: Multiply column 400 rpm by 60. Multiply column 800 by 80. 5. Multiply column 1200 by 90.
5. Ignition --> High Octane Table: Add 2 deg to all points 400 to 1000 RPM, .08 to .32 g/sec
1. Idle Limiters --> Idle Speed: 950
2. Idle Limiters --> IAC Park Position: Raise all points from 40C and up to 21
3. Idle Limiters --> Idle Air In Gear: All points 60C and up to 8.6
4. Fuel --> Main VE Table: Multiply column 400 rpm by 60. Multiply column 800 by 80. 5. Multiply column 1200 by 90.
5. Ignition --> High Octane Table: Add 2 deg to all points 400 to 1000 RPM, .08 to .32 g/sec
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From: Central, MA
P Mack, Did you have to make many changes in your VE for your C1?
I've been taking some advise I've seen passed around regarding cams and low RPM VE changes, and my truck seems to idle best with almost stock tuning. I've tried VE changes as low as 70, 80, 90 percent, and as high as 90 and 95 for just the 400 and 800 columns.
It could be the fact that I'm running a cam with a very minimal amount of bolt-ons, so the true effects from a cam this size aren't felt as strong as full bolt-on motors.
I've been taking some advise I've seen passed around regarding cams and low RPM VE changes, and my truck seems to idle best with almost stock tuning. I've tried VE changes as low as 70, 80, 90 percent, and as high as 90 and 95 for just the 400 and 800 columns.
It could be the fact that I'm running a cam with a very minimal amount of bolt-ons, so the true effects from a cam this size aren't felt as strong as full bolt-on motors.
I think i multiplied like .85 for 400 and .95 for 800 since it's a pretty small cam. It starts up instantly and my ltrims are pretty close to zero at idle so i'm leaving it alone. I did make some changes in the upper rpms too but that is a different story.
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From: Central, MA
Sounds good. I'm wondering if the extra size of my motor swallows up the little '220 even more. I have no starting issues at all on stock programming. If I do mod anything to the leaner side, my cold starts actually get a little erratic.
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From: Texas
Thanks, Now I understand. Can you explain what step 5 means? I am assuming that in hptuners I just add 2 to each value? Is there anything else that I should change in order to get this trex running in my A4. Im not looking for perfect, just enough to drive it without fouling out the plugs. Thanks in advance
My table looks like this
------------------------------------------------------
. . . . . . . . .400 . . .600 . .800 . .1000
0.08 g/cyl . . .11 . . .18 . . .24 . . .30
0.12 g/cyl . . .11 . . .18 . . .11 . . .30
0.16 g/cyl . . .11 . . .18 . . .24 . . .30
0.20 g/cyl . . .11 . . .18 . . .24 . . .30
0.24 g/cyl . . .10 . . .18 . . .25 . . .31
0.28 g/cyl . . .12 . . .18 . . .23 . . .28
0.32 g/cyl . . .14 . . .21 . . .22 . . .27
-------------------------------------------------------
5. Ignition --> High Octane Table: Add 2 deg to all points 400 to 1000 RPM, .08 to .32 g/sec
My table looks like this
------------------------------------------------------
. . . . . . . . .400 . . .600 . .800 . .1000
0.08 g/cyl . . .11 . . .18 . . .24 . . .30
0.12 g/cyl . . .11 . . .18 . . .11 . . .30
0.16 g/cyl . . .11 . . .18 . . .24 . . .30
0.20 g/cyl . . .11 . . .18 . . .24 . . .30
0.24 g/cyl . . .10 . . .18 . . .25 . . .31
0.28 g/cyl . . .12 . . .18 . . .23 . . .28
0.32 g/cyl . . .14 . . .21 . . .22 . . .27
-------------------------------------------------------
5. Ignition --> High Octane Table: Add 2 deg to all points 400 to 1000 RPM, .08 to .32 g/sec
Last edited by 2MuchRiceMakesMeSick; Aug 14, 2004 at 02:10 AM.
Not to highjack your post man, but I'm trying to do the same thing with the same cam (T-rex) w/ an M6. I set my target idle at 1000 rpm. Should I still do this: "Main VE Table: Multiply column 400 rpm by 60%. Multiply column 800 by 80%. Multiply column 1200 by 90%." Or since my target idle is 1000 rpm, should I do 1200 by 60%, 1600 by 80%? Or 1200 by 80% and 1600 by 90%? Or is this TOO much?
Also, my VE tables are in kPa, not g/cyl. Does this make any difference for the %'s to change these? I too am worried about fouling plugs.
Also, my VE tables are in kPa, not g/cyl. Does this make any difference for the %'s to change these? I too am worried about fouling plugs.
Last edited by BuckeyeROC; Aug 14, 2004 at 04:26 PM.
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From: Shelby Twp. Mich
Originally Posted by BuckeyeROC
Not to highjack your post man, but I'm trying to do the same thing with the same cam (T-rex) w/ an M6. I set my target idle at 1000 rpm. Should I still do this: "Main VE Table: Multiply column 400 rpm by 60%. Multiply column 800 by 80%. Multiply column 1200 by 90%." Or since my target idle is 1000 rpm, should I do 1200 by 60%, 1600 by 80%? Or 1200 by 80% and 1600 by 90%? Or is this TOO much?
Also, my VE tables are in kPa, not g/cyl. Does this make any difference for the %'s to change these? I too am worried about fouling plugs.
Also, my VE tables are in kPa, not g/cyl. Does this make any difference for the %'s to change these? I too am worried about fouling plugs.
any info Is Kickass!So you mean to tell me I need to change my 1600 numbers say multiply by 90% ? Maybe this is my problem?I have the car starting great now,But I cant get rid of the surge ,I stop at a light and I mean to tell you the car is a bucking bronco tach bounces around from 500 to 1000 it is anoying as hell.... 
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From: Atlanta, GA
Originally Posted by Pro Mouse
You are not Highjacking my post manany info Is Kickass!So you mean to tell me I need to change my 1600 numbers say multiply by 90% ? Maybe this is my problem?I have the car starting great now,But I cant get rid of the surge ,I stop at a light and I mean to tell you the car is a bucking bronco tach bounces around from 500 to 1000 it is anoying as hell....
any info Is Kickass!So you mean to tell me I need to change my 1600 numbers say multiply by 90% ? Maybe this is my problem?I have the car starting great now,But I cant get rid of the surge ,I stop at a light and I mean to tell you the car is a bucking bronco tach bounces around from 500 to 1000 it is anoying as hell....What size stall are you running?
Originally Posted by Pro Mouse
You are not Highjacking my post manany info Is Kickass!So you mean to tell me I need to change my 1600 numbers say multiply by 90% ? Maybe this is my problem?I have the car starting great now,But I cant get rid of the surge ,I stop at a light and I mean to tell you the car is a bucking bronco tach bounces around from 500 to 1000 it is anoying as hell....
any info Is Kickass!So you mean to tell me I need to change my 1600 numbers say multiply by 90% ? Maybe this is my problem?I have the car starting great now,But I cant get rid of the surge ,I stop at a light and I mean to tell you the car is a bucking bronco tach bounces around from 500 to 1000 it is anoying as hell....Mine bucks too under 2000 rpm.
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From: Shelby Twp. Mich
Originally Posted by BuckeyeROC
No, no, please don't take my question as a statement. I don't know what we need to do with it. I was just asking if we should change the 1200 and 1600, b/c with an M6 I'm trying to get it to idle at 1000 rpm, so it shouldn't see 400, 600 and 800 rpm too much. But it will see 1200 and 1600 and I wondered if we should scale back the values at those rpm's too.
Mine bucks too under 2000 rpm.
Mine bucks too under 2000 rpm.
Scott
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From: Texas
Originally Posted by Pro Mouse
I know BuckeyeRoc ,I am waiting for the HP Tuner experts to chime in before I do anymore changes....
Scott
Scott
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From: Texas
My table looks like this
------------------------------------------------------
. . . . . . . . .400 . . .600 . .800 . .1000
0.08 g/cyl . . .11 . . .18 . . .24 . . .30
0.12 g/cyl . . .11 . . .18 . . .11 . . .30
0.16 g/cyl . . .11 . . .18 . . .24 . . .30
0.20 g/cyl . . .11 . . .18 . . .24 . . .30
0.24 g/cyl . . .10 . . .18 . . .25 . . .31
0.28 g/cyl . . .12 . . .18 . . .23 . . .28
0.32 g/cyl . . .14 . . .21 . . .22 . . .27
-------------------------------------------------------
5. Ignition --> High Octane Table: Add 2 deg to all points 400 to 1000 RPM, .08 to .32 g/sec
In this portion of tune I am suppost to add 2 to each value? I am assuming it is in degress.
I added 150 to each value wiht my In Gear AC Off values and it idles great. Did not die once. Thanks for all the help guys.
------------------------------------------------------
. . . . . . . . .400 . . .600 . .800 . .1000
0.08 g/cyl . . .11 . . .18 . . .24 . . .30
0.12 g/cyl . . .11 . . .18 . . .11 . . .30
0.16 g/cyl . . .11 . . .18 . . .24 . . .30
0.20 g/cyl . . .11 . . .18 . . .24 . . .30
0.24 g/cyl . . .10 . . .18 . . .25 . . .31
0.28 g/cyl . . .12 . . .18 . . .23 . . .28
0.32 g/cyl . . .14 . . .21 . . .22 . . .27
-------------------------------------------------------
5. Ignition --> High Octane Table: Add 2 deg to all points 400 to 1000 RPM, .08 to .32 g/sec
In this portion of tune I am suppost to add 2 to each value? I am assuming it is in degress.
I added 150 to each value wiht my In Gear AC Off values and it idles great. Did not die once. Thanks for all the help guys.