SAFC help and Wideband reading helpp

[apedog]

Alright so I just got my 16g installed and everything. Now I have an SAFC and a UEGO Wideband and this is the problem.

My wideband isnt giving me a number I can consider stable. As in it keeps changing so idk what to do. I know at cruising its supposed to but idk. So I hold the gas at 1000rpm and see that its running to rich so I lean it down to about -17%. 2000 is like 10% or something. It just seems somethings wrong.

Plus if I were to boost it at all it will totally cut out like fuel cut or something ahh idk what to do

 

[chaggard27]

are you sure that you wired in the SAFC correctly? It sounds like it is not adjusting your AFR like it should be.

 

[ArmyGSX]

What size injectors are you running? (Please update your mod list)
Also when you do hit boost, what A/F is your wideband showing?
If your running to rich it will feel like fuel cut when its flooded.

During normal driving my A/F bounces between 14.6~15.2. Its the closest to the stock 14.9 I can get with my 680s.

 

[Chaosweaver]

What size injectors do you have? Also what type of fuel pump? Make sure its wired correctly also, if you need the wire diagram I can probably find you one for the 1G somewhere on DSMtuners .


If you need any help with tuning you can read this guide for piggyback tuning, it should help you. If it doesn't just reply back and we'll help you figure it out.

http://www.dsmtuners.com/forums/articles-tuning-ecu/58403-definitive-piggyback-tuning-guide.html

 

[apedog]

What size injectors are you running? (Please update your mod list)
Also when you do hit boost, what A/F is your wideband showing?
If your running to rich it will feel like fuel cut when its flooded.

During normal driving my A/F bounces between 14.6~15.2. Its the closest to the stock 14.9 I can get with my 680s.

Yea almost like its getting flooded is what it feels like. But my list is
660cc injectors
16g
190lph fuel pump
safc

Now cruising it will bounce right? I know it does that but what is scaring me was how it was bouncing to 15.x then going back down to 14.x. Didnt know if that was normal or not.

Im not sure if im hitting fuel cut or its being flooded. This is my first time trying to "tune" a car

 

[MJBean420]

It should stabalize at cruising. Mines somewhere around 14.5 with little fluctuation.

 

[sexystover]

your looking to get a ball park, you will never get it to stay on one number perfectly, i have almost same mods so ill try to help. first are all your setting right in the safc? second what are your low/high percent values, im running 30/80, also at low throttle shoot for 14.5-15 and on high throttle it depeds how much boost your running but since im running 20+psi i am running 11-11.5 a/f at WOT the easiest way i found to do it is put it in third at 2k and while watching the TPS percent on the safc keep it below 30 and watch your a/f and RPMS at the same time, as soon as it goes below or above 14.5-15 stop and make you adjustment, i usually do it in 3-5 percent increments to get it close and then fine tune it later. after you adjust for the spot where it went lean or rich start over in 3rd at 2k and repeat the process watching the a/f and the RPMS and making adjustments when it goes lean or rich. thenfor you high point setting you will do the same 3rd gear at 2k but this time you will go full throttle and watch your a/f and RPMS stopping whenever it goes lean or rich and making adjustments.

let us know what psi your running, i personally love how the car feels at a 11-11.5 a/f at WOT but if your only running 8psi or somethign you may be able to get away with a 12 or 12.5 a/f

my mods are

big 16g
FMIC
gm maf with maft
safc 2
wally 255 rewired
272 cams
headstuds

and im running 20psi currently but was running 22psi a few days ago, plan to turn it back up tomorow and tune again

 

[jed344]

i usually aim for 11.1 or so at wot and taper bit richer at redline like 10.8 guess im scared of lean