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help ? afr rich when crusing and bucking. tunerpro
Posted: Sun Feb 06, 2022 3:33 pm
by Commylife
can anybody help, i have started making small changes on my nvram for vs turbo. its a v6...
im still trying to figure out the fuel tables, i have set target afr and im using the pin a5 input for wideband, the small changes ive made are for manual trans, lean cruise and fans. if anyone can help me with pulling some fuel out of normal driving and if thats the reason its bucking arouind
Re: help ? afr rich when crusing and bucking. tunerpro
Posted: Sun Feb 06, 2022 4:09 pm
by Charlescrown
Are you using 12P? If so post a log.
Re: help ? afr rich when crusing and bucking. tunerpro
Posted: Sun Feb 06, 2022 5:33 pm
by hsv08
Commylife wrote:can anybody help, i have started making small changes on my nvram for vs turbo. its a v6...
im still trying to figure out the fuel tables, i have set target afr and im using the pin a5 input for wideband, the small changes ive made are for manual trans, lean cruise and fans. if anyone can help me with pulling some fuel out of normal driving and if thats the reason its bucking arouind
A log as above would be beneficial as well as your bin.
However, What changed did you make to the lean cruise?
Re: help ? afr rich when crusing and bucking. tunerpro
Posted: Sun Feb 06, 2022 8:25 pm
by antus
2 bar map? and have you set the flags for it and using 11p or 12p? agree, more info needed. whats changed on the car to support boost, what program (11p or 12p?) computer type and logs and bin would help. Generally speaking you would be updating the VE table for fuel to describe how the engine is breathing, not the target AFRs.
Re: help ? afr rich when crusing and bucking. tunerpro
Posted: Mon Feb 07, 2022 9:10 am
by vlad01
Bucking is normally when it's too lean.
Re: help ? afr rich when crusing and bucking. tunerpro
Posted: Mon Feb 07, 2022 1:55 pm
by Commylife
thanks for the replies lads wasnt expecting them so fast..
i am using vs-sc-v6 enchanced with standard maff
i have got a wideband and cruising at 60 or 80 is my wideband displays anwhere from 10.8 - 11.2 thats with the spartan wideband
turbo is gt3582 im only running 8 pound as i want to learn some more tuning basics. is it worth just changing ecu and loom and use 11 or 12p ?
Re: help ? afr rich when crusing and bucking. tunerpro
Posted: Mon Feb 07, 2022 2:21 pm
by antus
Im sure your going to get answers both ways on that question, but personally I wouldnt change it. The earlier 14.7 gear outputs a couple of set AFRs at power on for you to verify you see the right settings in tunerpro. Is this still on the later kit and can you check that? Once you trust the data, then if you post bins and logs you should be able to get some help.
Re: help ? afr rich when crusing and bucking. tunerpro
Posted: Mon Feb 07, 2022 2:35 pm
by Commylife
righto where and how do i verify
Re: help ? afr rich when crusing and bucking. tunerpro
Posted: Mon Feb 07, 2022 2:59 pm
by immortality
Do you still have the factory narrow band O2 sensors fitted? Does it go into closed loop mode?
Re: help ? afr rich when crusing and bucking. tunerpro
Posted: Mon Feb 07, 2022 4:08 pm
by Charlescrown
I doubt it can go into closed loop with those pig rich figures. Get back to basics and check your fuel pressure before trying to tune it.