PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

VE tables effect WOT?

Thread Tools
 
Search this Thread
 
Old Jan 22, 2005 | 11:16 PM
  #1  
John02SS's Avatar
Thread Starter
10 Second Club
20 Year Member
iTrader: (47)
 
Joined: Nov 2001
Posts: 1,452
Likes: 0
From: Pace, FL
Default VE tables effect WOT?

When I was dyno tuning my car I had a file with my stock VE tables tweaked I was using, but did my PE tuning on a file that had a tweaked Z06 VE table by mistake. Will loading the correct VE table back in the car have any effect on my WOT A/F or jus the part throttle? I read that the VCM uses the VE tables for < 4000 RPM's and steady load > than 4000 RPM's is strictly MAF based. With this in mind I would think the different VE tables would have no bearing on the PE values at WOT, but I'd love to have some input. The tunes are identical other than the VE tables. Thanks fellas!

John

Last edited by John02SS; Jan 22, 2005 at 11:38 PM.
Reply
Old Jan 23, 2005 | 08:52 AM
  #2  
wait4me's Avatar
TECH Addict
iTrader: (10)
 
Joined: Feb 2003
Posts: 2,961
Likes: 2
From: warsaw, in
Default

yes, ve effects fueiling at wot, the pe vs rpm is an adder of the ve tables 14.7 af ratio. it uses the ltrims to set up the 14.7 then pe table to add the fuel from there.
Reply
Old Jan 23, 2005 | 10:28 AM
  #3  
John02SS's Avatar
Thread Starter
10 Second Club
20 Year Member
iTrader: (47)
 
Joined: Nov 2001
Posts: 1,452
Likes: 0
From: Pace, FL
Default

So I should tweak the low rpm points in the Z06 table that I loaded by mistake to adjust for the cam and leave the rest alone since the car is tuned PE wise with this table.
Reply
Old Jan 23, 2005 | 10:38 AM
  #4  
Another_User's Avatar
TECH Addict
 
Joined: Feb 2004
Posts: 2,826
Likes: 0
Default

Originally Posted by John02SS
So I should tweak the low rpm points in the Z06 table that I loaded by mistake to adjust for the cam and leave the rest alone since the car is tuned PE wise with this table.
You could do it that way. Or you could tune your VE table and just make sure your PE table is putting you rich if you reduce the VE table near WOT. If you make increases it won't matter. After you are done you can adjust your PE table to put your WOT AF ratio back to what it should be. If you want to go the extra mile on your VE tuning, you can turn off PE while you do it, that way you get the proper trims across the board. I personally don't do that because I don't want to run my car too lean at WOT. I can hit most of the VE table without going into PE mode anyways.
Reply
Old Jan 23, 2005 | 10:46 AM
  #5  
narcszm's Avatar
TECH Enthusiast
 
Joined: Jul 2004
Posts: 546
Likes: 1
From: Washington
Default

Overwrite the values for all MAP pressures and 400-3600 RPM with your stock VE tune. I'm assuming you did a speed density tune on your stock VE table. Leave the ones 4000 and above alone. Select values 20-55 kPa and 3600-4400 RPM and do a polynomial smoothing about those values. Select values 60-105 kPa and 3600-4400 RPM and do a polynomial smoothing about those values, also.

That should pretty much put you where you want to be.
Reply
Old Jan 23, 2005 | 11:50 AM
  #6  
Another_User's Avatar
TECH Addict
 
Joined: Feb 2004
Posts: 2,826
Likes: 0
Default

Originally Posted by narcszm
Overwrite the values for all MAP pressures and 400-3600 RPM with your stock VE tune. I'm assuming you did a speed density tune on your stock VE table. Leave the ones 4000 and above alone. Select values 20-55 kPa and 3600-4400 RPM and do a polynomial smoothing about those values. Select values 60-105 kPa and 3600-4400 RPM and do a polynomial smoothing about those values, also.

That should pretty much put you where you want to be.
I haven't had good luck with smoothing. Hand smoothing has worked out much much better for me.
Reply
Old Jan 23, 2005 | 06:20 PM
  #7  
John02SS's Avatar
Thread Starter
10 Second Club
20 Year Member
iTrader: (47)
 
Joined: Nov 2001
Posts: 1,452
Likes: 0
From: Pace, FL
Default

narcszm,
That is pretty much what I did. Went in and adjusted the values under 4000 to what they needed to be and left the ones about the 4K mark the way there were so the WOT fueling didn't vary. Thanks for the input!

Thanks guys! Man HP Tuners makes this **** easy! Copy, paste, and your back in the game!
Reply




All times are GMT -5. The time now is 07:27 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE