I'll be able to help as soon as I get mine in...still waiting.

I'll be using stock airbox with K&N dropin. I have NOT done any maf scaling.

Let me try to understand:

with scaling = 812 you were idle +9 and Cruise -7 ?

You could try upping the scaling to like 950 until cruise is close to 0 then use latency for idle since latency affects ldle alot more than cruise.

 

Right, I know thats how it is *typically* done and mathematically it makes sense, but (as I experienced with my IX and some VIIIs that I've tuned) there is a sweet spot where actual latency drivability > close fuel trim latency drivability. I was at a point of diminishing returns too. I kept upping it and the trims were not really coming closer together. I may just have to MAF scale to bring them in check.

 

my scaling is at like 975 now on them and i had to do some latency changes and so far they seem to be good. Need some more driving time to let the trims settle out but they seem to be close.

I will post up my final settings on 93 octane as soon as I get done....


Yes these injectors are awesome - I am extremely happy with them in my IX and I agree with mrfred best choice out there, hands down.

 

We appreciate your efforts. I look forward to getting mine. If the scaling is different on an X with a K&N drop in, I will post my figures as well.

 

tsitalon1: Did you purchase your injectors from us? If so I would be happy to check on your order status.

In regards to the FIC website it could definitely use an update as they have very limited information on the Evo X offerings at this point. The correct part number for the Evo X is IS127-1100H as Dave mentioned previously.

We have these in stock at all times guys, don't hesitate to contact me with questions or to place an order. And don't forget, we won't be beat in regards to price

 

Hey Chris, Yep Ordered from you, thanks for the great price.

I already checked it's status, I believe it just left the FIC factory in Orlando today. I think I will have them by mid next week, and hopefully tuning will be done by that weekend.

 

Sounds good I look forward to the results!

 

I assume you're getting in a sufficient amount of stop-and-go driving when evaluating the trims. 812 is definitely too low for these injectors on gasoline. I suspect that if you keep pushing the latencies and scaling in the direction needed to dial in the trims, the driveability will improve. Have you fiddled at all with the fuel trim MAF Hz crossover points?

 

I brought the mid-> high transition point down to ~300hz (based on the recommendations, I should probably evaluate that for myself since I used ~800hz in my IX, but I believe values in general are lower in the X).

The interesting part is the latencies you provided for your IX are only ~15% higher than the latencies they gave me. With the ones I'm testing approaching 40% higher I'm not sure I should keep going with them to balance the trims, although that would facilitate an even higher base injector scaling.

EDIT: I uploaded a sheet to show some of my latencies / results since I started tracking them. They are a bit all over the place sine I was focusing on drawing the trims closer together at first, but this can give you guys some idea of what is going on...

http://thefrost.net/randomfiles/tuni...cc_Scaling.xls

I just realized that I switched to the NJ rom right before installing. I'll try to go back to my basically stock (just maf changover, faux NLTS, and half a point leaner fuel map) and see if that makes things better.

 

I say keep going on raising the latencies. Would be interesting to hear from Bryan on latency values on 8/9 vs 10. I am sure has dialed in identical injectors on both 8/9s and 10s. I know for sure that he's done ID1000s on 8/9s and 10s.

 

In the name of science: I'll push on and report back.

 

I must have had too much to think the other night. at ~1.7x I was -4/-8 and running decent. A little more testing to do and we'll see where it goes.

 

this is why I let Jon install the parts first. I'll have mine in next week, and hopefully he has this figured out by then :P

 

I am -12.5/-1.953125 at 1.68 x provided, but 6.25/-11.328125 at 1.62 x provided... so I'm splitting the difference (yes, I realize that one is ~10.5 delta and one is ~16.5 delta).
One thing I was thinking is that since it has warmed up a a bit maybe my fan is throwing things off. I don't have a heat shield yet, but I haven't used the AC at all. I'm getting close, but I'll let you guys know where things shake out.

 

Not sure what your numbers here represent. Are the XXX/XXX values the STFT range? What are the 1.68 x and 1.62 x? Is that multiplication times the baseline latency values, or is it ms?