RotaryRocket88

iTrader: (7)

I just went though all of my logs and all of the logs Nick_d_TII posted in this thread: https://www.rx7club.com/rtek-forum-168/afr-tuning-methods-827389/, and I could not find a single instance where the log showed the secondaries coming on before ~3800 RPM. I currently have my staging point adjusted to 3300 RPM, and from the info Nick gave, his has been at 3200 RPM. Yet every log I look at shows the staging taking place at the stock RPM threshold. The Injector duty cycle spikes, then gets cut in half as you would expect, so it doesn't look like a false signal to me.

This is very concerning because one of my logs in particular shows a primary injector duty cycle of 115% (and 9.8 AFR!) at 3700 RPM, at full load in 5th gear & making about 6 psi. 115% D/C is impossible, so what gives? FYI, I'm running clean 550cc primaries and I have not adjusted fuel anywhere below 8 psi. (This is on a stock S5 turbo, as well)

Some other examples:

Attached image 1 is a 4th gear highway pull from 3.4k to 6k RPM. I showed 79% injector D/C at 3664 RPM @ 4.8 psi, and then the secondaries triggered at 3716 RPM. D/C dropped to 42% at that point.

Attached image 2 is Nick_d_TII's log from his dyno run, which I'm assuming was 4th gear. At 3686 RPM, boost is at 5.2 psi, and the injector D/C is at 63%. At 3812 RPM, the secondaries come on and cut D/C to 42%.

So my question is, does anybody have logs from a 2.0 or 2.1 that shows the secondary injectors staging at the point they were adjusted to?

Nick_d_TII

iTrader: (6)

+1

You aren't kidding. I hadn't even noticed that, but looking back at the logs seems the secondaries are coming online at ~3800... NOT the 3200 i have set.

The dyno log was 3rd gear, but not that it matters.

Good looking out...

RotaryRocket88

iTrader: (7)

I initially wrote it off as not having the right load condition to trigger them, but the timing at the same point proves the load is up around 100%.

At least you have larger primaries. The stock 550s I have are worrying me now showing 80-115% D/C. Shouldn't the cap be 80% stock + the extra 5% pocketlogger added in to help reduce the lean spot? That's how I've always understood it.

RotaryRocket88

iTrader: (7)

I managed to get the injectors to stage at 3600 RPM during two runs today. But that was with the staging point adjusted to 3300 RPM, so it's still not right.

I've also noticed when setting the staging point, many times the program will give an error and say the value was not sent to the ECU. Yet, if I move the slider up or down, then back to what I had set it for originally, the error won't show up. So, I'm thinking that the problem is that even if it doesn't throw error, sometimes it's still not changing the value in the ECU. I messed with it a lot today, so that might explain why it finally accepted one of my new values, as I moved the slider.

I guess my next move will be to move the staging point down around 3000 RPM, and then move the slider back and forth a bunch of times. Hopefully, it will accept one of those values around 3000 - 3300 RPM.

On an unrelated note, I also had the program lock up after giving an "unexpected table size" error (I've seen it before, but it didn't lock up). I was adjusting timing and it just froze on me. When I got it working again, it had set almost all of my lead timing values to -16.2*! I had to reset the ECU and re-enter all of my fuel and timing corrections. Fortunately, there aren't that many, since I'm still using LOAD based timing.

turbo2ltr

iTrader: (1)

Please make sure you are using the latest version of the software.
http://www.digitaltuning.com/software/rtek.zip

There are several conditions that need to be met for the secondaries to come on. The number you set in the Rtek is not the RPM that the injectors turn on, but the *minimum* RPM the injectors *could* turn on if all other conditions are met.

RotaryRocket88

iTrader: (7)

Ah, so there's an new version available. I was using 2.1.0 Build 4, so we'll see how things go with 2.1.3 Build 1. Hopefully the errors I was getting will be gone.

But back to the staging requirements, I've logged under low load, high load, low gears & tall gears, but still haven't seen the secondaries come online any sooner than 3600 RPM. Today I was making 13.6 psi at 3366 RPM loaded up in 4th gear & the injector D/C was over 100% again, yet the secondaries did not come on until 3600 RPM. What other condition could there be? Also can you confirm that the maximum duty cycle for the primaries should be 85%, not 100+%? Thanks.

RotaryRocket88

iTrader: (7)

So with this latest software update, the errors I was seeing when adjusting injector staging have disappeared. I've set the point as low as 3100 RPM, and have so far seen the secondaries come on as early as 3280 RPM. This has greatly reduced primary duty cycles, but also richened up the 3300 - 3600 RPM range (10.5-11 AFR). I'm now pulling some of the extra fuel I put in that area to get back around 11.5 AFR.