thedru13

iTrader: (24)

Ok sorry if this is a noobish question. I just installed my FIC 850 injectors. Mods on my car are Works TR340 kit ets licp, ETS 3.5 intercooler. MBC, HKS intake. walboro 255. I have a custom tune ...

My question is ever since i put the injectors in at cold start seems to take a while to turn the car over almost like they the injectors are not primed. Is this normal? I have some more tuning to fine tune the car to do but need to wait to get it on teh dyno. Sick of street tuning.. Let me know your thoughts. I can post my tune if needed. Thanks.

I have an 06 Evo IX MR

Raptord

iTrader: (10)

I'm guessing you've already scaled the injectors properly?

thedru13

iTrader: (24)

Yah have the scaling set to 731

Raptord

iTrader: (10)

how do your fuel trims look?

thedru13

iTrader: (24)

3.504
1.800
1.200
1.104
0.744
0.504
0.360

Raptord

iTrader: (10)

Not your injector latencies, I'm talking about the fuel trims that you log with evoscan.

thedru13

iTrader: (24)

Have to go back out and log. When I did some loggin the other day they were with in the range of 5%.. I will have to do some more logs. My computer died mid log so couldn't save.

Raptord

iTrader: (10)

Don't need to go out and drive if you haven't reflashed your car in a little while; just turn the key to "on" without starting the car, and check "log to screen" in evoscan. You'll see your trims without having to st art the car.

thedru13

iTrader: (24)

Ok thanks. I will tomorrow morning on my way to work.

Thoe99

iTrader: (25)

Does it help the start if you crack the throttle open while starting it?

thedru13

iTrader: (24)

Ok plugged it in here is what it reads..

Fuel trim Low (LTFT) -0.78125
Fuel trim Mid (LTFT) -1.7578125

does that help?

thedru13

iTrader: (24)

Will try that.

Thoe99

iTrader: (25)

If it helps, there's too much fuel at startup.

thedru13

iTrader: (24)

Really? How so.. I am learning so bear with me.

Kakihara

no it doesn't because those are good values, anything between +-5% is "acceptable"
and because of the limitations (can't really choose your values in the ecu, it jumps from one to another) you can't get +-0% which would be ideal

I had the same problem recently, it's like my battery was dead and I had to accelerate to get it started, but then at that time my fuel trims where like -8.0 +12.5 so for me that was the injector scaling/latencies that were wrong.
Now that I corrected the injectior values to +0.1 +1.08 my problem is gone.