If you're logging to understand what the trims are doing, then don't clear them except when flashing in new injector settings.

BTW, there is something to be said for letting the trims affect WOT. If an injector is going bad or getting clogged, or if whether changes have significantly affected the fueling, having the trims influence WOT can help to keep AFRs in tolerable range rather than killing the motor.

 

Its an interesting debate as I fine tune the trims so the adjustments stay close to zero. The effect of moving the cross over to LTFT high is significantly less if your trims are consistently low, but if you are in the 10% range then that can provide significant lean or rich conditions at WOT. (like on track days)

Another part of the debate is how much trim compensation is effectively needed at WOT with a very well tuned AFR map, and other compensation and timing maintain safety when environmental issues, like gas, change.

Its probably a bit advanced for me to get into now, as I need to just settle the scaling and latencies and get into tuning the basics, to realize the impact of my new IM, cams, and porting. However, I did learn a lot and appreciate the continued direction/homework. {thumb up}

Back to your original thread topic, I found these injectors to be very plug and play easy. Is it just me or are they very clattery loud? I only had stockers before this, and they made very little noise by comparison.

 

I just wanted to add that I installed these injectors yesterday and had my tuner start with the scaling/latencies that Primersdime posted for 93 oct. It took us about 5 minutes to get them dialed in. Primers values were nearly perfect so Id reccomend anyone using 93 pump to start there. this thread was great help thanks

 

Good, I'm glad they worked out for you!

 

Is this (FIC) just a relabled Bosch injector or is there is a functional difference between the two?

 

Comes with needed spacers and orings.

 

Does anyone experiencing overfueling at the end of spool up?

4 Example: I start my pull from 2500rpm, reach full boost at 3800 rpm and shoot for flat 11,7AFR at 270 load till redline.
But If I start my pull later, say at 3800rpm and have full boost at 4200 rpm 270 load, I see overly rich afr at the end of spool up (240-270 load) about 10.9 and than it leans back to my normal 11.7...
If I lean the appropriate cells in my Fuel map, it helps a bit, but leans these areas too much for an early startet pull.

Can It be accel enrichment issue?

Scaling 975
11.72 - 1.320
14.06 - 1.032

LTFTs are within +/- 3-4%
Lean spool off.

Changing scaling and latencies does not affect that issue.

 

I had rich AFRs during and just after spool for a long time. I thought forever that it was the ECU. Turns out it was the DV valve opening and messing up air flow numbers. After I replaced the DV, it went away.

 

I am experiencing that on stock evo 9 metal DV. At what pressure did you start noticing that enrichment? How did you figure that out and what DV did you went for? Cobb?

 

Stock 9 DV at 25-26 psi. Went away as soon as I switched to a better holding DV. I've tried both the Synapse DV and the Cobb DV. Both stop this issue. I like the drivability of the Cobb DV a bit better, but its splitting hairs.

 

is it possible that stock 9 DV may leak at much lower pressures, say start at 15 psi?

 

Not typically.

 

I believe the enrichment starts just above 15psi, that makes me think that its not just leaking DV....

 

Could try crushing the stock DV a little.

 

Nvr mind... Found it