Lean condition at wot
Lean condition at wot 93 lightning w/ 03 dbw lq4 4l80, harness was modified by current performance and is out of a 03 express 2500, computer is out of an 03 silverado 2500hd
when computer was tuned he turned vats and emissions off, and turned the electric fans on, but did not mess with anything else
walbro 222lph inline fuel pump 60# fuel pressure at wot
I tried to list as much info as possible
the check engine light does not come on either to show a lean condition
the truck drives great just cruising( maybe a little lean) wideband jumps between 15.0-15.5
when you are stopped and go full throttle the wideband will stay around 15.0, but as soon as it shifts to 2nd gear the afr will drop to around 13.5 and stays there
if you are cruising on the interstate and go wot the same thing happens, the truck will downshift to 2nd gear and afr will be around 15.0, then as soon as it shifts to the next gear the afr will drop to around 13.5.
has anyone run into a problem like this before? any ideas?
when computer was tuned he turned vats and emissions off, and turned the electric fans on, but did not mess with anything else
walbro 222lph inline fuel pump 60# fuel pressure at wot
I tried to list as much info as possible
the check engine light does not come on either to show a lean condition
the truck drives great just cruising( maybe a little lean) wideband jumps between 15.0-15.5
when you are stopped and go full throttle the wideband will stay around 15.0, but as soon as it shifts to 2nd gear the afr will drop to around 13.5 and stays there
if you are cruising on the interstate and go wot the same thing happens, the truck will downshift to 2nd gear and afr will be around 15.0, then as soon as it shifts to the next gear the afr will drop to around 13.5.
has anyone run into a problem like this before? any ideas?
Trending Topics
What OS are you using?
There are PE delays at RPM and a PE delay RPM bypass.
I'm not saying this is exactly whats going on but it sounds like a good place to look,
if you can't edit the tune yourself (or know how it works)
don't be so quick to dismiss the idea.
Let the tuner know whats going on and get his opinion.
There are PE delays at RPM and a PE delay RPM bypass.
I'm not saying this is exactly whats going on but it sounds like a good place to look,
if you can't edit the tune yourself (or know how it works)
don't be so quick to dismiss the idea.
Let the tuner know whats going on and get his opinion.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
