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Opinions on my test VE table..inside

Old 06-15-2004, 11:01 PM
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Default Opinions on my test VE table..inside

I have been working for hours assembling a VE table based on data that I logged through HPTuners today. There are some manifold pressures that I did not get...I would have to dog the vehicle for along time to get them all, so the parts that didn't pop up (that I doubt pop up frequently at all) have been scaled based on my stock VE table. Can somebody take a look at these and give me some opinions before I just dump it in my cars computer?

File is in Excel.
Old 06-16-2004, 04:37 AM
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Hmm.. your VE table seems ok around the very high RPM/Loads area but all else seems extremely low.

Here is my VE table you can use for comparison. I am a NA stock internals car with no MAF.

Code:
43	44	45	46	46	48	49	50	50	51	52	53	55	56	57	57	58	59	60	60
44	47	49	51	51	52	54	55	56	58	59	60	61	62	63	64	64	65	65	66
46	48	52	55	57	59	60	61	63	64	64	65	66	66	67	68	69	70	70	71
46	49	51	55	58	61	62	63	65	66	67	68	69	70	71	71	72	73	74	75
46	51	54	57	60	62	63	65	67	68	69	70	71	73	73	74	75	76	77	78
47	53	57	58	62	63	64	65	67	69	70	72	74	76	77	78	78	79	80	81
48	54	59	62	65	66	67	68	70	72	73	75	77	78	79	80	81	81	82	84
49	55	62	64	67	70	71	72	74	75	76	77	78	80	81	82	83	84	85	86
50	56	63	68	70	71	72	73	75	76	77	79	80	81	82	84	85	86	87	87
51	58	65	69	71	73	75	76	76	78	79	80	81	82	84	85	86	87	88	89
52	59	66	71	74	75	77	78	79	79	81	82	83	84	85	86	87	88	89	90
53	61	67	72	75	76	78	79	80	81	82	83	84	85	86	87	88	89	90	89
54	61	69	73	76	77	79	80	81	82	82	83	84	85	86	87	88	89	90	90
55	63	71	74	77	78	80	81	82	83	83	84	85	86	87	88	89	90	90	90
56	63	72	75	78	79	81	82	83	84	84	84	85	86	87	88	89	90	90	90
57	65	73	76	79	80	81	83	84	85	85	85	86	87	88	89	90	90	90	90
58	66	74	76	79	81	83	84	85	86	86	86	87	87	88	89	90	90	90	90
59	66	75	77	80	82	84	85	86	87	87	87	88	88	89	90	90	90	90	90
60	67	76	78	81	82	84	86	87	88	88	88	89	89	90	90	90	90	90	90
Plz note, this table could damage your vehicle. Use at your own risk. I accept no responsibility for anything you do with this table.
Old 06-16-2004, 07:14 AM
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I would give you my opinion but the HP Tuner values are much different than the values in LS1Edit. Where you have 90 I have 2247. Is there a conversion formula? MAybe Edit value / 25?

John
Old 06-16-2004, 06:59 PM
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Thats a peculiar stock VE table...of course it looks far more normal than my stock one. What did you smooth out? Anything?

I don't know about that 2247 where my 90 is in the VE table...my HPTuners pulls a VE calculation, in percent, directly from the car. I thought it was rather unusual myself. That is what I calculated my VE table from, based on calculated VE, rpm, and MAP.

Anybody else have any input?
Old 06-16-2004, 07:48 PM
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don't use the VE PID to calculate your VE table. I used the LT's for much of mine but ideally you need a WB02 and a load dyno (or lots of street time).

My WOT VE is a little high I believe as I have to pull the PE vs RPM down quite a bit to achieve air/fuel ratio that I am satisfied with. My VE with a 1 PE vs RPM multiplier would run me very rich.
Old 06-16-2004, 08:16 PM
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If you wade through the sticky VE thread at the
top of this forum, you will come away with a
hurting head but maybe some better idea about
how Edit uses their number (it is some kind of
absolute air number, while HPTuners is a
percentage of ideal); if you knew the displacement
based ideal absolute number, that times HPTuners
percent should be close to that Edit cell value.
Old 06-16-2004, 09:06 PM
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Anybody else?

Last edited by Another_User; 06-16-2004 at 11:16 PM.
Old 06-17-2004, 07:11 AM
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The values in the PCM are the same. The difference is how LS1Edit or HP Tuner chooses to display them.

What does a stock Main VE Table look like when you pull it with HP Tuner?
If you do not mind could you post or email me a copy of it from your 98 Z28?

Jnorris404@aol.com

Thanks

John
Old 06-17-2004, 08:05 PM
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Here is my stock VE table. Note the really strange spikes, and irregular parts in the 3d view (if you load it up so you can view it).
Old 06-18-2004, 09:45 PM
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Thanks
Old 06-18-2004, 10:01 PM
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Magnus,

Just at a glance, your table looks quite high. Our 427 race engine wasn't that high in the mid range.

A VE table calculator and closed loop function was used to determine our table (Gen VII software).

Just my opinion.
Old 06-19-2004, 02:20 AM
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Kevin, you are probably right. My VE table is still in development.
Old 06-19-2004, 10:14 AM
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Just a note, an EGR car I would expect to have
some peculiar VE excursions as EGR come in &
goes away; EGR basically being a bypass of the
"explicit" inlet port.
Old 06-19-2004, 04:29 PM
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Originally Posted by jimmyblue
Just a note, an EGR car I would expect to have
some peculiar VE excursions as EGR come in &
goes away; EGR basically being a bypass of the
"explicit" inlet port.
Well I calculated that in when I was trying to tune the darn thing. I smoothed over where the VE table dips when the EGR is on, and then disabled the EGR. Of course all I ended up with was KR.


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