PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

check this out please

Thread Tools
 
Search this Thread
 
Old Feb 23, 2008 | 11:18 PM
  #1  
Klive's Avatar
Thread Starter
Banned
iTrader: (4)
 
Joined: Dec 2007
Posts: 366
Likes: 0
Default check this out please

I have a few WOT shots on this scan, there is one at 6 minutes in from a dead stop, basically an 1/8th mile or so run. i would love some feedback from some of you guys that know whats going on. the timing is doing some strange stuff, especially just after the 1-2 shift. also its strange to me that the injectors are showing over 100% duty cycle, this is a bolt on only motor, guess the tune must be way off. thanks for any help at all!
Attached Files
File Type: hpl
work scan.hpl (134.7 KB, 92 views)
Reply
Old Feb 23, 2008 | 11:25 PM
  #2  
01'WS6's Avatar
TECH Regular
 
Joined: Aug 2004
Posts: 443
Likes: 0
From: Tyler, TX.
Default

Post up your tune as well and mods. Thats some crazy **** going on.
Reply
Old Feb 23, 2008 | 11:31 PM
  #3  
Klive's Avatar
Thread Starter
Banned
iTrader: (4)
 
Joined: Dec 2007
Posts: 366
Likes: 0
Default

here's the tune.

Mods are as follows: mid length headers with true duals, ls6 cam, cai, ported tb, 6.0L ported heads. Its a stock 5.3L motor 4.10 gears
Attached Files
Reply
Old Feb 23, 2008 | 11:41 PM
  #4  
01'WS6's Avatar
TECH Regular
 
Joined: Aug 2004
Posts: 443
Likes: 0
From: Tyler, TX.
Default

Do u have a file of the stock tune?
Reply
Old Feb 24, 2008 | 08:54 AM
  #5  
Klive's Avatar
Thread Starter
Banned
iTrader: (4)
 
Joined: Dec 2007
Posts: 366
Likes: 0
Default

no, when I saved it I screwed up and altered it after that so its not a totally stock tune.
Reply
Old Feb 24, 2008 | 10:14 AM
  #6  
foff667's Avatar
LS1TECH Sponsor
iTrader: (2)
 
Joined: Jul 2003
Posts: 7,986
Likes: 3
From: Clermont, FL
Default

injector duty cycle depends on a few things including how accurate your ifr(injector flow rate) table is, not to mention how large your injector are, how much rpm you're turning & what your commanded afr is. From the scans you can't see what your commanded afr is(your not logging it) but your editor shows 11.5-11.9:1 in the range where it hits 99-100% duty cycle at 6000-6200rpms. Add to that you're only running 25lb injectors these are two big factors contributing to why your seeing that high, if you have access to a wideband and see your actual afr is around 11.5-11.9:1 you could always lean it out some so that your IDC's come down with that commanded afr.
Reply
Old Feb 24, 2008 | 10:25 AM
  #7  
Klive's Avatar
Thread Starter
Banned
iTrader: (4)
 
Joined: Dec 2007
Posts: 366
Likes: 0
Default

I have an LC1 wideband I'm going to have to install this week so hopefully I can get it leaned out, or atleast get the IDC under control. I'm going to go make a few WOT runs in a bit and log the afr and commanded afr as well as cyl. airmass. Thanks for the early comments guys, hopefully the next scan provides a little better info.
Reply
Old Feb 24, 2008 | 10:51 AM
  #8  
01'WS6's Avatar
TECH Regular
 
Joined: Aug 2004
Posts: 443
Likes: 0
From: Tyler, TX.
Default

I also think your nasty timing drops has to do with your torque management being so aggressive.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Feb 24, 2008 | 11:18 AM
  #9  
Klive's Avatar
Thread Starter
Banned
iTrader: (4)
 
Joined: Dec 2007
Posts: 366
Likes: 0
Default

ahh, I didn't think about the torque management, thats what that is.... here is another scan from today, there is a longer WOT pull up to about 95ish, I need to lower that shift point, it falls on its face right before the shift. It is attached.
Attached Files
File Type: hpl
xxx.hpl (50.2 KB, 50 views)
Reply
Old Feb 24, 2008 | 10:41 PM
  #10  
Klive's Avatar
Thread Starter
Banned
iTrader: (4)
 
Joined: Dec 2007
Posts: 366
Likes: 0
Default

i leaned it out a bit, however, as you can see in the last scan (xxx) it is still maxing out the injectors. Now I can't believe that with just bolt ons and ported heads I would be in the need of bigger injectors, I also realize that the tune could be so far off that its got the IDC all wrong.
Reply




All times are GMT -5. The time now is 08:23 PM.

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