NOMIEZVR4

iTrader: (10)

Hey guys,
I'm having some scaling & latencies issues for these injectors.

My settings
93 octane

1329-scaling
2.784
2.112
1.680
1.368
1.176
.984
.816

In order to check my low trims, I let the car run for a good 25 minutes and its around 6 which is fine with me.
The issue is when I start driving the car to check the mid trims, after 10minutes the low trims go to 10 then to 12 but my mid trims are -4 and I drive for a good 25-30minutes.

Is it an issue low trims go that high while driving?
If so, how can I adjust them?


Mods:
05' evo 8
walbro 255 pump
stock block/head
stock i/c
stock turbo
stock intake pipe
gsc stage 2 cams
excedy twin disk
aem widebankd
3" turbo back exhaust
FIC 1450cc injectors

TurboTim06

iTrader: (2)

adjust cruise trims first as close to 0 as possible...to adjust cruise trims drive the vehicle and adjust the INJECTOR SCALING to determine correct scaling...after cruise is dialed in adjust the idle/low trims by adjusting the LATENCY NUMBERS up/down acording to the +/- trim readings

NOMIEZVR4

iTrader: (10)

As far as my latency numbers go, for my idle its at 6 which I honestly don't mind. Its just that when my low's get to 10-12 while driving is what concerns me. I'm not sure if it is ok for my low trims to get that high while driving.

While driving since they get to 10 should I adjust the lower voltage?If so, should I raise them or lower them?

ecktt

As TurboTim06 said; get the scaling dialled in first, then worry about the latency. Low LTFT, Mid LTFT and High LTFT are affected by scaling but the Low LTFT is affect by latency the most.

NOMIEZVR4

iTrader: (10)

My Mid LTFT are at a -4. Would I richen up the scaling? Making it lets say 1300 from 1329?

NOMIEZVR4

iTrader: (10)

I played with the scalings a bit, if i make them lower than 1329 they do to 1271 which makes it further from 0, also tried higher than 1329 which makes it the same result.

The best scaling is 1329, from doing some readings, it seems I should change the voltage.

How should I adjust the latency accordingly?

todd6027

iTrader: (10)

take .020 out of the latencies see how that goes

NOMIEZVR4

iTrader: (10)

To understand this better, the voltage controls how long the injectors stay open and close?
If there open to little it would run lean and if its open to long it'll be rich?

NOMIEZVR4

iTrader: (10)

If the numbers are positive does that mean its rich??

NOMIEZVR4

iTrader: (10)

By GOLLY I think I'm getting close. Been reading for days and days.
Very grateful for the time and effort put in my Fast_Freddie, razorlab ,Fostytou ,Mrfred
and MalibuJack !



so my settings
2.664
2.088
1.656
1.344
1.152
.960
.792

My mid trims are in between -3 and -4.

My STFT at idle start off low then go to 12.64 and stay pegged there. I was thinking of one or two things.

1. lower the settings below 14v to help the low trims.
2. adjust the fuel map

am I on the right page??

ecktt

At idle you're suppose to be in closed loop hence the reason your STFT and LTFT have any meaning. Fuel map editing would be useless. If the Mid LTFT is negative but the Fuel trim is is maxing out the STFT, I'd

Injector scaling * 1.03
[Latency values] * 1.18

After which reset the LTFT memory by disconnecting the negative from the battery for a 10 more more seconds.

DvlInDskyz

iTrader: (14)

If when you adjust the latencies, does this affect the AFRs at all at WOT? I have a good tune on my car but hated the way it idled and surged at mid 2-3k RPMs, so I took a look at my scaling and latencies and adjusted them accordingly and it really helped alot (trims are great) but I dont want to get on it if it does change the AFRs and grenade something.

ecktt

yes but less.