i've searched but couldn't find any threads on how to add fuel using ecuflash. anyone know how? please tell me how???

 

lower the #s displayed in the fuel maps. if you raise them you will be leaning it out. make small adjustments and use a wideband to confirm and also monitor your knock using a logger like mitsulogger or evoscan. I suggest logworks if you have an lc1 or lm1

 

oh, ok thanks. would 12.9 be too low? on 1000 rpms through 50% load?

 

I would think you would be in closed loop in that range. I believe the fuel map only adjusts for open loop as I understand. If you are running 12.9:1 in closed loop, then it's WAY too rich. You should be at stoich, 14.7:1.

 

i suggest you do a lot more reading before doing anything.

 

+1

 

i meant 12.9 in the fuel map in ecuflash. my car is idling lean, keeps throwing the po171 code. so i'm just trying to make it idle a little richer so that it doesn't pull that code. with the 272's i have, it was throwing that code the very day i put cams in. i got it to idle very nice with about 16 inHg but still trying to figure out how to richen it up so that code goes away.

 

Do you have a wideband? If not, put the laptop down, smack yourself a few times, put your stock map back on (you did save that, right?) and don't touch ECUFlash until you have a wideband and a logger.

Who did your tuning?

 

no, i do not have a wideband. there are many ways to tune a car and a wideband is not the only way. i just wanted to know how to richen up the air/fuel mixture in ecuflash to get rid of that po171 code. i know what i am doing but just need some info on ecuflash's fuel map and how it works(meaning which way to richen, increase or decrease numbers.) i am not tuning so i do not need a wideband. i am simply adding more fuel, maybe 10%, like everyone else who also have cams in their car for the first time. i do not need dumb remarks and i am not that dumb to not save the stock map. thanks.

 

Well, lowering the numbers richens the mixture, but it sounds to me that you have a scaling problem, not an A:F problem. Did you upgrade your injectors along with the cams?

 

It is perfectly reasonable to tune the idle with a narrowband.

You can look at your O2 feedback trim and see if it has hit a limit that triggers the CEL.

13.2 would give you approx 10% increase and is safe to try.

 

yes, i did put in injectors too. i have rc fuel injectors. 750cc
this is what i scaled it at. seems about right to me for these injectors.
LATENCY VOLTAGE
4.96 3.312
7.03 2.184
9.38 1.512
11.72 1.032
14.06 0.696
16.41 0.432
18.68 0.264

INJECTOR SCALING
750cc

 

that is exactly what i have been doing this whole time. except i don't have a narrowband gauge, would be a little better but i am just doing this by looking at the o2 feedback trims and the front o2 sensor voltage. trying to keep that voltage as close to .5 as i can, well at least trying to not make it just too high or too low which i got to a certain point then stopped

 

Dont forget about the Idle air screw on the Throttle body....

 

IMO you are incorrect. I would suggest putting down the laptop before you burn a hole in your pistons...

good luck (your going to need it without having the proper tools)