New JB4 Log - What did I do wrong?...or right?

[Bron]

Just installed the JB4 and my logs don't seem right. I thought ign should all be 0 with some slight variations and my boost seems too low for Map 2. Did I screw something up? I would very much appreciate it if someone could at the very least confirm this isn't right, and if someone can tell me what's wrong, I'll buy you a beer.
All my ign are .8s with a few 1.5s and my peak boost is only 17? (only? I thought it should be more like 20 with Map 2)

2018 Stinger GT2 MBRP Exhaust, Burger Intakes, Denso 1 step gapped to .022 (unless that's what I screwed up)

 

[Thomby]

Map 2 is +5psi tapering to +4psi up high, so I'd expect around 17-18 total:

Kia & Hyundai JB4 - JB4tech.com - International Turbo Tuning Discussion

*** We're going to use this thread as the general Kia Stinger informational thread including posting the install guide, mapping guide, software, firmware updates as we release them, logs, and general discussion. *** Order Here! (http://www.burgertuning.com/kia_stinger_jb4.html) Use subject to...

www.jb4tech.com

Ign2-6 are how many degrees it's pulling, and I believe the rule of thumb is to look for 3+ degrees (as well as 3 degree drops in Ign1, since that's displayed in absolute timing advance). 0.8s are basically noise, and I don't think 1.5s matter much. Are you running 93 octane?

 

[Bron]

Map 2 is +5psi tapering to +4psi up high, so I'd expect around 17-18 total:

Kia & Hyundai JB4 - JB4tech.com - International Turbo Tuning Discussion

*** We're going to use this thread as the general Kia Stinger informational thread including posting the install guide, mapping guide, software, firmware updates as we release them, logs, and general discussion. *** Order Here! (http://www.burgertuning.com/kia_stinger_jb4.html) Use subject to...

www.jb4tech.com

Ign2-6 are how many degrees it's pulling, and I believe the rule of thumb is to look for 3+ degrees (as well as 3 degree drops in Ign1, since that's displayed in absolute timing advance). 0.8s are basically noise, and I don't think 1.5s matter much. Are you running 93 octane?

Yeah I'm using 93.
I read stock psi is 12-14 so you're probably right, 17 seems in the correct ballpark, be it slightly low.

The ign stuff confuses me. I believe this is timing, so if the numbers are relatively close but different then that's okay. If there are large spikes in either direction then that's bad. Is this correct?

 

[Thomby]

The ign stuff confuses me. I believe this is timing, so if the numbers are relatively close but different then that's okay. If there are large spikes in either direction then that's bad. Is this correct?

Ign1 is absolute timing advance in degrees. Ign2-6 are adjustments (reduced timing) relative to cyl1. So:
- 12 in ign1 with all 0s in 2-6 would mean all cylinders firing 12 degrees BTDC
- 12 in ign1 that drops to 8 or 9 under WOT (ignore values off-throttle and around shifts) indicates timing being pulled 3-4 degrees for all cylinders
- 12 in ign1 with a series of 3.8s under ign4 would mean cyl4 is pulling 3.8 degrees from the overall 12deg advance

In your log, I only see one blip of 3.8. The 0.8s and 1.5s, which you have at 20% throttle as well as WOT, are just noise as I understand it. Wouldn't hurt to do another log, with a long WOT pull from say 25/30 to 75/80 so it covers a few gears. Let the JB4's automatic logging that kicks in at 70% or whatever throttle handle it instead of starting it manually, and you won't have so much off-throttle filler data.

Edit: here's what BMS say about it:

JB4 Logging Parameters - JB4tech.com - International Turbo Tuning Discussion

Hey guys, We’ll use this thread for details and discussions on Kia specific JB4 logging parameters. Fuel trims and wideband o2 sensor control explained here...

www.jb4tech.com

Ign1-6: Timing advance in the specific cylinder. Generally all cylinders will agree but as you start to approach a limit of Boost for a given fuel quality/octane level then you’ll start to see 3.5 degree timing drops in specific cylinders. The lower the grade fuel the more frequently you’ll see drops. If you see drops in the same cylinder repeating several times in a single gear then it’s usually an indicator that you’d be better off with a lower Target for the given fuel. Note that timing in all cylinders regularly drops negative during shifts and under some other driving conditions so do not confused mapped changes affecting all cylinders with cylinder specific timing drops when evaluating logs. Also note cyl1 is sampled via OBDII while cyl2-6 are sampled via RAM read so there will be some timing differences between the readings due to the different protocols. Cyl 2-6 are not available for all vehicle models. Note with firmware v20+ values 2-6 reflect timing drops rather than raw timing advance per cylinder. Set FUA = 1 to revert back to raw timing if needed. In the new format this shows how many degrees were removed from that specific cylinder. Also note it's normal to see timing drops. If you're trying to tune for zero drops then you'll end up leaving a lot of power on the table.

 

[Bron]

I read that multiple times last night and did not understand it. Maybe I was just half asleep but after reading your description, that makes so much sense now.
Thank you!! I owe you a beer...