ApacheToYaDome

iTrader: (3)

I just put in FIC 950cc injectors and this is what I went with
FIC950
Scaling 812
Latency:
Bat Time
4.69v = 3.312
7.03v = 2.184
9.38v = 1.32
11.72v = 1.008
14.06v = 0.768
16.41v = 0.624
18.68v = 0.504

I then went and logged my car at idle and at cruising speed, I know I need to be looking for +/- %5 cruising long term fuel trim but when I open Evoscan i dont know what the difference is between all of the fuel tables, Example, Fuel trim low, med, high, injector duty cycle and injector pulse width. So here is my excel spread sheet. I haven't had the time to set up my mut table, loging load, or boost and will probably do that tomorrow I'm just curious if someone could tell me what tables I should be looking at for injector scaling.

And does anything look off? I throw a P0420 code and I think it's my rear o2 sensor because I don't have a cat

Edit: Mods are as followed, port and polished intake manifold, dnp Turbo manifold, perrin fuel rail, 950 FIC injectors, 20g Turbo walbro 255 fuel pump, hks 3" Turbo back exhaust.hks 272 cams, o2 dump,

todd6027

iTrader: (10)

fr o2 sensor voltage should go up and down between 0 and 1v at idle and cruise
short term fuel trim is what ecu is looking at now this is added to or taken away from the trim in use
fuel trim in use is what its using at any given time

fuel trim low for idle
fuel trim mid for cruise
furl trim high for wot

Kakihara

actually, fuel trim high is "disabled" by default by Mitsubishi and also on Tephra's original roms
but someone found a way to tweak that https://www.evolutionm.net/forums/ec...m-control.html
with those new tables you can choose when low,mid,high trims are used

trims are based on the MAF Hz, Mitsubishi default :
low->mid 88Hz
mid->low 82hz
mid->high 1598hz
high->mid 1591hz
my MAF only goes to 1593Hz so I'm never into "high"

fuel trims cycle every 4 minutes
you need to reach at least 80°C coolant temp
then wait 4+ minutes at idle so it calculates fuel trim low
go on the highway and drive at a stable speed for 4+ minutes too to cycle fuel trim mid
rince & repeat this is not done in 2 minutes

how you change values :
low > mid = increase latency
mid < low = decrease latency
mid = low but higher than +5% = lower scaling
mid = low but lower than -5% = raise scaling

ApacheToYaDome

iTrader: (3)

Thanks. I get the whole let car warm up and drive around for 16 min or atleast in 4min cycles. I just didn't know what table I should have been looking at.

todd6027

iTrader: (10)

trims are based on o2 sensor feedback

ApacheToYaDome

iTrader: (3)

So my air fuel ratio is around 11.5 cruising at 65mph and idle it's like 10.5-11 I'm using a wideband lc-1 what do I adjust to bring my age's closet to 14.7 while cruising and at idle?

todd6027

iTrader: (10)

what are the fuel trims low and mid

ApacheToYaDome

iTrader: (3)

Fuel trim mid is anywhere from -5.078, -2.148, and -3.125 and none of my data logs ever show what my fuel trim low is. I have it selected in evo scan but I've only gotten numbers for fuel trim mid, in use, injector pulse width and duty cycle

ApacheToYaDome

iTrader: (3)

And when I logged my car at idle yesterday after I put the injectors in and threw in a base scale and latency I idled for 20min and never got low mid or high only got pulse width and duty cycle

EDIT: As of right now I'm idleing afr's stays pretty much at 21.7 my low fuel trim is -1.563 and mid is 4.88 or 3.17 just drove it home and my afr's were bouncing all over the place from 7.4-21.7 I just recalibrated my wideband before I went to work and same thing. I know its running super rich cruising at like 30mph cuz my wideband is at 7.4 and i can smell hella fuel. So I reflashed my ecu back to a stock base map and the only thing I saved to it was the injector scale and latencys. I have no clue why it's running all retarded

todd6027

iTrader: (10)

with a low trim of -1.56 your car should be around 14.7 afr at idle, it wouldnt run at 21 thats clean air territory , wheres the sensor mounted you could have a big exhaust leak which you would hear or a dodgy sensor

ApacheToYaDome

iTrader: (3)

My sensor is mounted right at the end of my downpipe. I think this Is a bigger issue than scaling injectors. I just started running tephramodv7 yesterday and did some logs my mid is -6.45 and my low is -2.34 the entire time I was driving on the freeway my Afr is jumping sporatically from 7.4-21.7 and sometimes Just drops to 7.4 and idle is still at 21.7 and when I pull out of my garage or going slow Afr drops to 7.4 and I can smell hella gas. My car ran fine before and I put aa bigger Turbo on, bigger injectors, an o2 dump and a port and polished intake manifold. I cleaned the maf could I have ****ed up the resistor? At this point I think its something to do with air, either leaking out somewhere or leaking in. If my Maf is bad.that might explain sporatic afr's cuz it might be reading all over the place. I'm going to do a boost leak test tomorrow and try and figure.this out. Cuz right now I can't drive it

ExViTermini

iTrader: (25)

It sounds like the WB is not functioning correctly. IF the car was really trying to idle at 7.4 it would just stall, likewise at 21. Check the wiring and the sensor on the wideband. Sounds like it is an innovative?

ApacheToYaDome

iTrader: (3)

The car does stall, and yes It's an innovative lc-1. I'll disconnect the wideband tomorrow and recalibrate it and check all of the wiring but I doubt that's it. If it isn't the wideband I don't really know where to go after that, I guess check the maf and do a vaccum test

stunt2

iTrader: (8)

7.4 and 21.7 are LC-1's lowest and highest values, there's no way car can swing between that afrs and still be functional
I bet your LC1's o2 sensor is knackered. replace it

ApacheToYaDome

iTrader: (3)

So I found out that I bumped my sensors grounding point. Fixed and recalibrated it yesterday and it reads good. Also m rubber fuel line tthat connects to my fuel pressure regulator the clamp wasn't on causing it to spray fuel onto the top of my fuel rail and a vacuum line on my intake manifold was off. Fixed all of that and my idle afr. Is 14.5-15.5 idle fuel trim is -7.5 haven't logged my mid, will do that today and adjust from there. I was just worried there was a bigger problem than what was going on.