LS1TECH - Camaro and Firebird Forum Discussion

Forced Induction Superchargers | Turbochargers | Intercoolers

LTFTs still high?

Thread Tools
 
Search this Thread
 
Old Jul 14, 2015 | 07:35 PM
Share
  #1  
Ron_Stoppable's Avatar
Ron_Stoppable
Thread Starter
TECH Enthusiast
iTrader: (1)
 
Joined: Aug 2012
Posts: 725
Likes: 41
Default LTFTs still high?
Does anyone know what would cause this? I have ZERO exhaust leaks as I just assembled everything with fresh MLS gaskets and properly torqued everything. LTFTs stay very consistent on both banks. They stay at +25% kind of stumped. Idling and crusing my Aem wideband is pretty spot on @ 14.8:1 fuel pressure looks good and everything. O2s are brand new AC delcos. Once again Zero exhaust leaks. Think its just maybe tune related?
Last edited by Ron_Stoppable; Jul 14, 2015 at 07:41 PM.
Reply
0
Old Jul 14, 2015 | 07:50 PM
Share
  #2  
The Alchemist's Avatar
The Alchemist
UNDER PRESSURE MOD
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (19)
 
Joined: Nov 2001
Posts: 10,813
Likes: 15
From: Doylestown PA
Default
First off, is this a boosted car? Second, is the car modified where it would need a tune? Is the car tuned at all?
Reply
0
Old Jul 14, 2015 | 08:43 PM
Share
  #3  
Ron_Stoppable's Avatar
Ron_Stoppable
Thread Starter
TECH Enthusiast
iTrader: (1)
 
Joined: Aug 2012
Posts: 725
Likes: 41
Default
Yes its a front mount S475. Truck has a base e85 tune on it.
Reply
0
Old Jul 15, 2015 | 08:52 AM
Share
  #4  
The Alchemist's Avatar
The Alchemist
UNDER PRESSURE MOD
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (19)
 
Joined: Nov 2001
Posts: 10,813
Likes: 15
From: Doylestown PA
Default
Then the base tune is way off. I would not drive it like that. Get someone who knows what they are doing to look at it and correct the tune before you put more miles on it. +25 fuel trims is the max they will go, so it leaves no room for adjustment.
Reply
0
Old Jul 15, 2015 | 06:27 PM
Share
  #5  
stevieturbo's Avatar
stevieturbo
9 Second Club
 
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
Default
If fuel trims are pegged like that, then as above, it probably just needs tuned correctly.
Reply
0
Old Jul 16, 2015 | 11:10 AM
Share
  #6  
The Alchemist's Avatar
The Alchemist
UNDER PRESSURE MOD
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (19)
 
Joined: Nov 2001
Posts: 10,813
Likes: 15
From: Doylestown PA
Default
FYI, E85 requires a fair bit more fuel than e10 (normal gasoline), so it would makes sense that it is running with fuel trims that high. Did you tell your tuner that you planned to run e85?
Reply
0
Back to Subforum
Forced Induction
View Next Unread
My On3 Non AC Build




Advanced Search

All times are GMT -5. The time now is 08:02 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