Lmodel

Hi Ziad,

Do you think you can share more coz I havent read anything on this and I'm on a JDM evo. More injector scalings that I see does not goes beyond the original capacity of the injector.

Using a FIC 1,050 and scaling it to 1,083, wouldn't it be more than the original capacity?

Btw, I'm using the FIC 1,050cc as well.

Cheers!

Jorge T

iTrader: (18)

remember the OEM rom cars that use a 542 scaling use a totaly different MAF Smoothing table that basically make it equal to the roms set up with 513 scaling. I made a post about this loong time ago. For starters use Mr Freds latencies they are spot on.

ziad

iTrader: (1)

^^ what he says.

Carloverx

iTrader: (26)

Edit:
Quick question (because apparently i'm retarded).

I'm running an:
FP black with
50/50 Meth on
850CC FIC - scaled to 609

LTFT mid -10

Can i adjust this with latency alone?

Also, does mid affect AFR at WOT??

Thanks in advance. This is a great thread.

Jack_of_Trades

iTrader: (17)

Posted in first post of this thread
Just noticed a typo in this post and it should read:

Scaling 725

Latency

3.312
2.186
1.281
0.771
0.458
0.283
0.172

R/TErnie

iTrader: (32)

Props to Freddie! I had him personally set my injector scaling and latencies!

Fast_Freddie

iTrader: (50)

Fixed!

Thanks Eric!

mountainturbo

iTrader: (9)

Posting for future reference, thanks guys!

Eisen7

I've followed some of the tips here as well as what is in Merlin's tuning guide and I think my injectors and trims are pretty close.

I struggled to find a balance where my injectors were scaled so that my idle and cruise trims were OK and my WOT AFR's were close to what was on the map. What I found was that I had to scale my injectors quite high (compared to their rating) before the idle and cruise trims would get close to zero. The problem then was that on a WOT run, the WB02 was showing about a 15-17% leaner value than what my map was set to (luckily my map is quite rich up top for safety).

I looked at MAF scaling as per Merlin's guide to try and get the WOT AFR's in line with the map, but to increase my MAF scaling above 1000Hz by 15% (unit value of 236) = 271. The max unit value allowed is 255. So I'm guessing you only use MAF scaling to make very minor adjustments if required?

In the end I settled for a lower scaling and suffered a bit of idle and cruise richness, for a closer AFR match at WOT.

These were my settings:

Injectors = Power Enterprise TL 700's
Scaling = 680
Latency 11.72 = 1.200
Latency 14.06 = 0.888
Trims Mid = -5.39
Trims Low = -3.8

I also run a silicone intake with a buschur pod filter and an AVO airbox with carbon lid and a cold air intake if that helps.

I'm surprised how high the scaling went before the trims came down considering the rating of these injectors. I'll try and drop the latency some more and see if that helps, but it wasn't budging the trims much at all when I tried.

SoCalRedLine

iTrader: (2)

e85 scalings:
(for tephra 5.x people)
Injector scaling: 622 gave around +5 trims (605 gave >-5 trims)

(for tephra 7.x people)
best setting: -3 low/+5 mid
Scaling: 622
Latency:
11.72v 1.008
14.06v 0.768

problem with changing the voltage latency was with WOT lambda. I had to change my stock fuel map AFR's quite a bit more to avoid an overly rich WOT.

HornstarBU

iTrader: (7)

deleted

VGergo

iTrader: (3)

I have FIC 1050 in the car runing with Eu RON 100 fuel. Thanks for the settings posted in the topic. My injector scaling is 1008cc latency values are : 4.44
3.192
1.752
1.032
0.84
0.576
0.432

Everything is fine with that setting the ltft low is 1.5% after 16 minutes idle. the ltft mid is 0.3% after 24minutes cruesing. Great.

My only problem is my fuel map looks like in the wot part like this :

The Logged AFR is :

3000-3500rpm : 12 to 11.7 afr
3500-4600 : 11.6afr
4600-6000rpm 11.4 tapering to 11.1

rpm 260load 270load 280load
3000 11.54 11.54 11.40
3250 11.40 11.26 11.2
3500 11.26 11.06 11.06
3750 11.00 10.81 10.75
4000 11.00 10.81 10.75
4250 11.00 10.81 10.75
4500 11.06 10.75 10.75
4750 11.06 10.75 10.87
5000 11.06 10.87 11.00
5250 11.06 11.13 11.06
5500 11.26 11.33 11.33
6000 11.54 11.47 11.33

Why do I have to increase the numbers from 5000rpm to not get rich afr ? The car was in the 270load area from 3000to 6000rpm.
The intake syste is complety stock. stock airbox, air filter panel and tube between the maf sensor and turbo. Just leave like that it is not problem or shoud I compensated with the maf scaling as in the Merlin book ?
On wastegate pressure write in the open loop area 11.5 and check the afr on the wbo2 ? and where it was not the same there edit the maf scaling with the logged Airflow Hz ?

l2r99gst

iTrader: (2)

It's because of lean spool.

VGergo

iTrader: (3)

I forgot to mention in the periphery bit FBA lean spool is diseable. with lean spool on every run had different afr..

l2r99gst

iTrader: (2)

I'm not quite certain then. It coud be a combination of other things then. One quick thing to check would be to see if you are logging the correct load that the fuel table is looking up, usually baro+temp corrected load.