Running way lean help
I have a fitech 750 kit installed on my
403ci Ls Twin 68mm Turbo motor with WWCH stage 2 ported heads
81 pound injectors along with hyper fuel 1600 fuel pressure reg and 440gph pump stock LS9 cam on a t56
91 pump gas
The problem is as soon as I hit the gas from idle to 2-3k it goes super lean . I can provided the excel and cal log file
Any help would be great
Share datalog here using Dropbox. Copy file to app, share file, create link, copy to Clipboard, paste in New comment on website.
https://www.dropbox.com/s/e006hvcjtxaufnt/camaro%20cal%20file.cal?dl=0
https://www.dropbox.com/s/b2lmohnqum7dn5q/DashBoard5.csv?dl=0
https://www.dropbox.com/s/aff46dfgpzanqiw/DashBoard2.csv?dl=0 larger file you can see at the end i tap the gas the car goes lean and shuts off
thanks in advance
just did another log car just randomly turns off idling
https://www.dropbox.com/s/tcy2bhz2mfkwyyj/DashBoard8.csv?dl=0
Wish this self turning would work out
Quote from TheStig86 on May 2, 2019, 11:48 amhttps://www.dropbox.com/s/e006hvcjtxaufnt/camaro%20cal%20file.cal?dl=0
https://www.dropbox.com/s/b2lmohnqum7dn5q/DashBoard5.csv?dl=0
https://www.dropbox.com/s/aff46dfgpzanqiw/DashBoard2.csv?dl=0 larger file you can see at the end i tap the gas the car goes lean and shuts off
thanks in advance
Here is what I see. Your data goes lean with throttle and your trims and learns are trying to throw fuel at it, at an extreme rate. Either you have a fuel flow issue, causing fuel pressure to drop when load is added. Or you have an electrical issue creating false O2 readings.
Ultimate LS is even more dependent on good grounds than the throttle body systems. 2awg battery to block, 10awg battery to frame and 10awg battery to body. This has never failed me.
Not looking at the data. Does the engine smell rich?
i think it's fuel. might have a bad pressure regulator not going up to 58psi
maybe adjust the accel pump?
I have their 440 intake pump with -8an supply and return from their hyperfuel 1600 pressure reg
also waiting for my new iac to come in.
the grounds are solid talked with fitech even went to their shop in riverside talked about that.
Something is not right and it isn't the Fitech. Tuning is only going to make it worse.
diagnosed it . bad fuel pump only making 35-40psi. new one is on it's way fingers crossed
so i just installed the new fuel pump fuel pressure is perfect along with the new iac.Checked the vacuum which is perfect 21-22. i'm still getting very learn past 1500 rpms spiking to 17-18 afr . ideas? add more fuel? then it wants to stall coming to a stop.
https://www.dropbox.com/s/aexrqqrdhm4amma/DashBoard15.csv?dl=0
Let it learn