? for all you ls1 edit gooroos
Thread Starter
Launching!
Joined: Feb 2003
Posts: 243
Likes: 0
From: Fresno,CA
? for all you ls1 edit gooroos I changed my buddies cam in his ss camaro. And i had no problem tuning L-Trims with his air mass sensor. However on my tuck no mater what i do with the injector flow rate table and the MAF table. It doesnt seem to change what so ever. It goes a little lower at first then proceeds to clim to 25. I also tried to change my fuel psi at idle, while watching my short fuel trims. Nothing changed. Any idea why it wont change. By the way if it makes a difference i have a electronic tb from the factory.
Adkoonerstrator
iTrader: (4)
Joined: Nov 2001
Posts: 21,420
Likes: 0
From: Deep in the seedy underworld of Koonerville
Re: ? for all you ls1 edit gooroos The first thing that comes to mind is that you have an air leak someplace, either at the intake after the MAF or on the exhaust before or close to the O2 sensor.
Is your PCV system still stock? It is a closed system normally so if you have a breather on it your trims will show a lean condition.
My bet is you have an air leak someplace.
Is your PCV system still stock? It is a closed system normally so if you have a breather on it your trims will show a lean condition.
My bet is you have an air leak someplace.
Re: ? for all you ls1 edit gooroos After I changed out my cam my L-trims went to the rail(+25%), I changed out my O2 sensors and all was fine after that. I think the oil and coolent messed up my O2 sensors after removing the heads. 
But all's fine now. 
But all's fine now. Trending Topics
Thread Starter
Launching!
Joined: Feb 2003
Posts: 243
Likes: 0
From: Fresno,CA
Re: ? for all you ls1 edit gooroos My 02's are probably bad. I know with my last motor i kept hiting the grams per/sec limit and basicly torched off one of my 02's. I have sinse replaced one 02 and the other one is still original. My L-trims are also always differnt from one another until they get to 25. How ever i do know that my intake might have a small leak through the egr tube. Not to sure.
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
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!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo