Predator tuners help and questions
Thread Starter
TECH Enthusiast
Joined: Apr 2009
Posts: 531
Likes: 0
From: Pocatello Idaho
Predator tuners help and questions Ok first off I read and read again the predator tuning sticky and all possible links. Ok my question is according to non WOT LTFT's. I have a couple days of established so far and my LTFT is reading +23-25%. In the tuning section I read that I need I need to adjust my injector slope to add fuel to level out my LTFT? I am nowhere near 0-2% I read it is supposed to be. After I get the non WOT fueling better I can work on the WOT. Also if it means anything my o2 readings are reading between 720 and 830. This I think means I am lean which probably explains the +25% LTFT. If I need to be more clear please let me know and thanks for the help.
Staging Lane
Joined: Mar 2007
Posts: 64
Likes: 0
From: Phoenix, AZ
Is your car modded enough to where the fuel trims being that far off (without the proper tune) would make sense?
Otherwise an exhaust leak would make sense. Your O2s might be seeing fresh air from an exhaust leak which tells the computer (falsely) that you're running lean which would cause it to add a bunch of fuel (+25 is kinda a lot). I think my car will throw a code if either bank is +/- 15.
If your O2 sensors are reading .720-.830 at WOT you could be way lean (again unless you have an exhaust leak where the fresh air is hitting your O2s). You should probably stop going WOT until you get your trims in check 1st, or get a wideband hooked up and try to figure out what is actually going on.
You CAN get a car tuned decent-ish with a predator and narrowband O2s.
Otherwise an exhaust leak would make sense. Your O2s might be seeing fresh air from an exhaust leak which tells the computer (falsely) that you're running lean which would cause it to add a bunch of fuel (+25 is kinda a lot). I think my car will throw a code if either bank is +/- 15.
If your O2 sensors are reading .720-.830 at WOT you could be way lean (again unless you have an exhaust leak where the fresh air is hitting your O2s). You should probably stop going WOT until you get your trims in check 1st, or get a wideband hooked up and try to figure out what is actually going on.
You CAN get a car tuned decent-ish with a predator and narrowband O2s.
Ok first off I read and read again the predator tuning sticky and all possible links. Ok my question is according to non WOT LTFT's. I have a couple days of established so far and my LTFT is reading +23-25%. In the tuning section I read that I need I need to adjust my injector slope to add fuel to level out my LTFT? I am nowhere near 0-2% I read it is supposed to be. After I get the non WOT fueling better I can work on the WOT. Also if it means anything my o2 readings are reading between 720 and 830. This I think means I am lean which probably explains the +25% LTFT. If I need to be more clear please let me know and thanks for the help.
If so, make a nice cruise log and post it up on our forums, we'll get it figured out.
Thread Starter
TECH Enthusiast
Joined: Apr 2009
Posts: 531
Likes: 0
From: Pocatello Idaho
Ok checked for exhaust leaks and couldn't find any. Had a manifold crack recently while putting new o2's in. That problem is fixed tho. There is one spot in the back that I can see carbon on the outside of the pipe, but it is where the pipe goes over the panhard. It had a few miles on the clock so I figured I'd get new o2's just to rule that out. One thing I was thinking is that with the predator tune that comes with the predator could it be that it is designed for 28# inj? I know mine has 26's. If it was tuned for 28's that would create a lean condition correct?
Trending Topics
The Predator knows what size stock injectors you have....
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
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
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
LS1Tech Sponsor
Joined: Dec 2005
Posts: 2,932
Likes: 12
From: CT
ok, well if you are able to disable all those codes, then it's not a new version, so no - you can't save data logs...
but yeah, with ltft's being THAT high, there's gotta be leaks somewhere... intake, vacuum, exhaust...
but yeah, with ltft's being THAT high, there's gotta be leaks somewhere... intake, vacuum, exhaust...
__________________
06MonteSS / DiabLew Tune
2014 Camaro 2SS/RS - LS3, 6-speed manual, short-throw performance shifter, NPP dual-mode performance exhaust, 1LE front splitter, ZL1 rockers, Z28 Rear Spoiler, all paint-matched Red Rock Metallic, BMR strut tower brace, Cold Air Inductions cold air intake, Apex Motorsports, Inc. catch-can, Custom DiabLew Tune
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com
06MonteSS / DiabLew Tune
2014 Camaro 2SS/RS - LS3, 6-speed manual, short-throw performance shifter, NPP dual-mode performance exhaust, 1LE front splitter, ZL1 rockers, Z28 Rear Spoiler, all paint-matched Red Rock Metallic, BMR strut tower brace, Cold Air Inductions cold air intake, Apex Motorsports, Inc. catch-can, Custom DiabLew Tune
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com
Thread Starter
TECH Enthusiast
Joined: Apr 2009
Posts: 531
Likes: 0
From: Pocatello Idaho
Ok actually found a leak at the tube that goes into the side of the TB. Fixed that and believe it or not I never noticed how rough it idled until I fixed it. Anyway can I send my unit in or can I use the pc connect to upgrade my unit. Oh and thanks a lot for your help.
LS1Tech Sponsor
Joined: Dec 2005
Posts: 2,932
Likes: 12
From: CT
a-HA!! cool!! found the problem... nice!!
yeah, you would have to send it to diablosport, and pay to get it upgraded to the newer version, so that you could save logs, do the internet updates, etc etc...
yeah, you would have to send it to diablosport, and pay to get it upgraded to the newer version, so that you could save logs, do the internet updates, etc etc...
__________________
06MonteSS / DiabLew Tune
2014 Camaro 2SS/RS - LS3, 6-speed manual, short-throw performance shifter, NPP dual-mode performance exhaust, 1LE front splitter, ZL1 rockers, Z28 Rear Spoiler, all paint-matched Red Rock Metallic, BMR strut tower brace, Cold Air Inductions cold air intake, Apex Motorsports, Inc. catch-can, Custom DiabLew Tune
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com
06MonteSS / DiabLew Tune
2014 Camaro 2SS/RS - LS3, 6-speed manual, short-throw performance shifter, NPP dual-mode performance exhaust, 1LE front splitter, ZL1 rockers, Z28 Rear Spoiler, all paint-matched Red Rock Metallic, BMR strut tower brace, Cold Air Inductions cold air intake, Apex Motorsports, Inc. catch-can, Custom DiabLew Tune
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com
Last edited by 06MonteSS; Aug 11, 2009 at 08:01 PM.
LS1Tech Sponsor
Joined: Dec 2005
Posts: 2,932
Likes: 12
From: CT
__________________
06MonteSS / DiabLew Tune
2014 Camaro 2SS/RS - LS3, 6-speed manual, short-throw performance shifter, NPP dual-mode performance exhaust, 1LE front splitter, ZL1 rockers, Z28 Rear Spoiler, all paint-matched Red Rock Metallic, BMR strut tower brace, Cold Air Inductions cold air intake, Apex Motorsports, Inc. catch-can, Custom DiabLew Tune
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com
06MonteSS / DiabLew Tune
2014 Camaro 2SS/RS - LS3, 6-speed manual, short-throw performance shifter, NPP dual-mode performance exhaust, 1LE front splitter, ZL1 rockers, Z28 Rear Spoiler, all paint-matched Red Rock Metallic, BMR strut tower brace, Cold Air Inductions cold air intake, Apex Motorsports, Inc. catch-can, Custom DiabLew Tune
www.diablewtune.com -- www.diablocustomtune.com -- www.diablocustomtunegm.com
