I bought a set of "FIC 850" injectors id number "125-0850" and the other numbers are "4257 17113743"

Issue is we can not get them to scale to idle. We have tried every number.
The last owner said he has no idea he ran them on his car and said that they were hard to tune but after ran fine...


Need help asap I have to drive the car 8 hours 1 way to a rally in NY and cant unless I can figure out the injector scaling. I can log and post anything thats needed please help!

I have tried 770, 696, 713, and many other...closest normal idle was a much lower number around the 500-600 range???? Any ideas? I am still a noob at tuning but have had 2 well known tuners try to help with the free time they have (not much) so anything can hel.

Mods are...
Stock MAF
New Built head 1mm over valves, GSC 274 cams.
Jdm map
Upper and lower Ic pipes
Stock intake manifold
Egr delete/emissions delete
No rear o2 sensor
Aem wired to pin 75 on ECU
E9 turbo
3" straight pipe
FIC 850 injectors

Email is Twistedshot101@aol.com
Pm for cell

Help me get to Rally New York!

 

bump anyone? Im doing boost leak test now making sure I have 0 leaks.

 

Post up your latency's.

 

All I have is the base setting for 770 and 696 tried everything.

Sitting in the car now it runs lean on my AFR with almost all of the base settings

Any recommendations?

 

Please post the latencys you tried to use.

 

Car wont idle with this o2 trim is stuck at 24.80
FIC 850

Scaling 696

Latencies
3
2.376
1.2
0.768
0.504
0.36
0.312


same for this sits at 24 o2 trim
FIC 850s

Scaling 770

voltage-
3.312
1.68
1.032
0.84
0.552
0.456
0.36

We just set it at 430cc.....
and .408 14 volt and its idles...

 

Ur trims are saying you need a lot more fuel, so add latency.

Try something like this....


Scaling 770

voltage-
3.312
1.9
1.100
0.88
0.70
0.58
0.45

 

I just did the reflash and reset Ecu with your recommendations car idles at 900 rpm O2 feedback is at 24.80
Fuek trim low is at .78 with a 18.6 AFR

 

My low mid and hight trims are not logging is this a issue? Im just trying to get the idle down have not gotten to cruse yet

 

Says it still needs more fuel. Either....

1 - add more latency (more fuel) or lower scaling (more fuel)

2 - your o2 sensor may be bad or going bad.

 

Just replaced the o2 sensor. With the new head build.

We are getting closer!


Best Numbers we had were
680
1.008 14V

We are dropping to
665
1.008 14v

Fuel trim is at 0 at idle around 950rpm
No low or mid trims are logging

 

Having the same issues with FIC 950s and AEM wired to pin 75. Mine seems to start and idle okay at rich AFRs with lower scaling but won't start at recommended scalings. Fuel trims are 0 for some reason. Hopefully we can get this figured out.

 

I agree Start with your base number but set your 14v to a much larger number my base was 770 and .552 14v but its running much better with

650 scaling

3
2.376
1.2
0.864
1.008
0.384
0.336

 

Make that curve a lot smoother and it will help. Something like this (just an example)

3.312
2.3
1.68
1.15
1.008
0.88
0.65

 

Thanks Ill give that a shot now.

Just took a 30 mile drive mid trim logged a -4.88 at idle my o2 feedback is within 5 most of the time but does go 10 and 15 at some pounts idles at around 14-15 AFR fuel trim low is -0.7812....

Just now its sitting at 0 o2 trim and 13.4 AFR