PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

LTB1 +25 now

Thread Tools
 
Search this Thread
 
Old Nov 11, 2010 | 04:23 PM
  #1  
BlackSS2001's Avatar
Thread Starter
TECH Fanatic
20 Year Member
Photogenic
iTrader: (23)
 
Joined: Sep 2005
Posts: 1,132
Likes: 0
From: Joplin,MO
Exclamation LTB1 +25 now

First the LTB2 was +25 now the problem has switched sides on me overnight. How could this even happen?

At 2% throttle I get both banks to hit +25.

O2s are either reeding really high or really low, but reading almost identical numbers either way.

When should I be checking the LTs? So far I've been checking them at an idle and when I rev the engine the bank thats acting up will slowly drop after a little while then it will climb back up.

I have scans using HP tuners below.

mods are in my sig.
Attached Files
File Type: hpl
LTB1 now messed up.hpl (14.0 KB, 128 views)
File Type: hpl
LTB1 at O temp.hpl (21.9 KB, 130 views)
Reply
Old Nov 12, 2010 | 10:02 AM
  #2  
Ws6kid.'s Avatar
TECH Enthusiast
 
Joined: Nov 2009
Posts: 620
Likes: 0
From: Brownsville, texas
Default

Might be a dum *** question but whats LTB1 and LTB2?
my LTB1 gets really high sometimes while my LTB2 stays in the normal range?
Reply
Old Nov 12, 2010 | 10:07 AM
  #3  
BlackSS2001's Avatar
Thread Starter
TECH Fanatic
20 Year Member
Photogenic
iTrader: (23)
 
Joined: Sep 2005
Posts: 1,132
Likes: 0
From: Joplin,MO
Default

Originally Posted by Ws6kid.
Might be a dum *** question but whats LTB1 and LTB2?
my LTB1 gets really high sometimes while my LTB2 stays in the normal range?
LTB_
Long Term Bank 1 or 2
Bank one is driver side, Bank 2 is passenger side.

Then you have the STB_
Short Term Bank 1 or 2


BUMP!!! Needing any thoughts on this guys/girls!
Reply
Old Nov 12, 2010 | 10:18 AM
  #4  
Ws6kid.'s Avatar
TECH Enthusiast
 
Joined: Nov 2009
Posts: 620
Likes: 0
From: Brownsville, texas
Default

Originally Posted by BlackSS2001
LTB_
Long Term Bank 1 or 2
Bank one is driver side, Bank 2 is passenger side.

Then you have the STB_
Short Term Bank 1 or 2


BUMP!!! Needing any thoughts on this guys/girls!
So what if my LTB1 goes high most of the time
ive seen it hit up to 25%.
Reply
Old Nov 12, 2010 | 11:02 AM
  #5  
Beau@SDPC's Avatar
LS1Tech Sponsor
iTrader: (14)
 
Joined: Feb 2009
Posts: 2,262
Likes: 2
From: Lubbock, TX
Default

Are you using HPT to tune your car or is someone else and you are just scanning? Has the car even been tuned? If you want, you can pm me. We may have much to discuss.
Reply
Old Nov 12, 2010 | 02:14 PM
  #6  
Ws6kid.'s Avatar
TECH Enthusiast
 
Joined: Nov 2009
Posts: 620
Likes: 0
From: Brownsville, texas
Default

Originally Posted by John@Scoggin
Are you using HPT to tune your car or is someone else and you are just scanning? Has the car even been tuned? If you want, you can pm me. We may have much to discuss.
talking to me or to the original poster? lol
Reply
Old Nov 12, 2010 | 02:32 PM
  #7  
Beau@SDPC's Avatar
LS1Tech Sponsor
iTrader: (14)
 
Joined: Feb 2009
Posts: 2,262
Likes: 2
From: Lubbock, TX
Default

Both if yall are interested lol.
Reply
Old Nov 16, 2010 | 01:47 PM
  #8  
BlackSS2001's Avatar
Thread Starter
TECH Fanatic
20 Year Member
Photogenic
iTrader: (23)
 
Joined: Sep 2005
Posts: 1,132
Likes: 0
From: Joplin,MO
Default

the car was tuned with EFI live.
I have HPT and suck with it as I have no clue how to tune with it. I am only pulling scans with it at the moment.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

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

 Verdad Gallardo
story-5

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

 Pouria Savadkouei
story-6

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

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old Nov 16, 2010 | 01:48 PM
  #9  
BlackSS2001's Avatar
Thread Starter
TECH Fanatic
20 Year Member
Photogenic
iTrader: (23)
 
Joined: Sep 2005
Posts: 1,132
Likes: 0
From: Joplin,MO
Default

Originally Posted by Ws6kid.
So what if my LTB1 goes high most of the time
ive seen it hit up to 25%.
it means your pumping fuel like crazy into those 4 cylinders. Something is giving it a lean condition so it's trying to make up for it. Watch your O2s and see what they are doing
Reply
Old Nov 16, 2010 | 02:04 PM
  #10  
Beau@SDPC's Avatar
LS1Tech Sponsor
iTrader: (14)
 
Joined: Feb 2009
Posts: 2,262
Likes: 2
From: Lubbock, TX
Default

If you want to PM me, I might be able to help a little.

Thanks
Reply
Old Nov 17, 2010 | 09:00 AM
  #11  
Beau@SDPC's Avatar
LS1Tech Sponsor
iTrader: (14)
 
Joined: Feb 2009
Posts: 2,262
Likes: 2
From: Lubbock, TX
Default

Pm responded to, but it appears that both banks are affected, not just bank 1
Reply




All times are GMT -5. The time now is 05:36 PM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
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-5
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-6
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-7
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-8
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-9
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