Now Available: OpenFlash Tablet Datalogging/Datagraphing (BETA Release)

[StormTrooper]

Originally Posted by Rombinhood@OpenFlash

There is also a fine learning correction that can offset the retard induced by the coarse adjustment. So even though Adv mult drops, you don't get into a situation where you are running unnecessarily conservative in some load/rpm points while too aggressive in others. Of course much of this depends on where the tuner sets the load/rpm fine learning breakpoints. In the oft maps, they been adjusted to be far more useful in NA applications.

yeah i noticed the KC learned, which still baffles me is added timing, is pretty aggressive in almost all areas even with the adv dropping to .76

[jamesm]

Originally Posted by StormTrooper

I took a quick look at the logs and while i'm still unfamiliar with how that program works i can say the pulling of timing was after the pull. so my guess is low rpm high load freeway driving. (there is a pretty steep hill right after i tried to log and was cut off. 6th gear 65mph going to 70)

also i just started the car and the multiplier moved to .89 from .76 (Both logs show 1 )

I'm at 4500 ft its dry and about 15°F outside and 91 Oct.

Perrin filter, silicone inlet.....removed the expansion things off the intake.

it could be dropping due to tip-in knock correction. not sure why it does it when the corrections are so small but i've seen it on my pump gas tune. do you have a way to view flkc? do you have any logs of cruising around, and if so do they show small bits of feedback correction when you tip into the throttle? were there more serious (i.e. >-1.4) fbkc events anywhere in the logs you have?

[jamesm]

Originally Posted by StormTrooper

yeah i noticed the KC learned, which still baffles me is added timing, is pretty aggressive in almost all areas even with the adv dropping to .76

kc learned is the applied ignition advance, so basically the value in the advance table minus all of the various corrections and compensations. you generally want it to be whatever you're asking it for.

that's the complicating bit though, it's not just 'high is good' and 'low is bad'. if you're only asking for 2.11deg of advance at a given moment, the 2.11 is good, whereas if the advance map wanted 7deg at that time it'd be bad.

[StormTrooper]

yeah i don't see anywhere on the tablet to adjust the channels i'm logging and FBKC isn;t one of them....

I put both logs on DATA Zap which works much better and more intuitively than the vishnu one.

No logging of around town or cruising yet... i did confirm that both logs a 4th gear pull to 6k and a 3rd to 6.9k look good to my limited knowledge.

not sure if others can look at my logs but if so i have the same username.

[brn12345]

I can confirm that my car does not knock with 95 octane pump gas or on VP Motorsport 103 at full throttle. I can also confirm that it does knock during normal cruising and that has an impact on the reducing the multiplier. This tip in knock is very evident with pump gas, it is also present but very very minimal with the Motorsport 103. My logic is that the car is running so much timing at cruise (I have logged over 40 deg) that as soon as you push on the accel pedal the car knocks. When time permits, I will try and reduce overall timing at cruise to mid 30's and see if that solves the problem. It could just very well be the car is set up like that for emission purposes.

[StormTrooper]

not sure if my intake mods are messing this up or it's something else....AFR seems fine if a little rich compared to the sample logs i've seen and knowing this is NA.

i might try different gas. i'm running non Ethanol 91 from a local station vice chevron or shell.

[StormTrooper]

Originally Posted by brn12345

I can confirm that my car does not knock with 95 octane pump gas or on VP Motorsport 103 at full throttle. I can also confirm that it does knock during normal cruising and that has an impact on the reducing the multiplier. This tip in knock is very evident with pump gas, it is also present but very very minimal with the Motorsport 103. My logic is that the car is running so much timing at cruise (I have logged over 40 deg) that as soon as you push on the accel pedal the car knocks. When time permits, I will try and reduce overall timing at cruise to mid 30's and see if that solves the problem. It could just very well be the car is set up like that for emission purposes.

does it do that on the stock tune? can you test that?

[brn12345]

Originally Posted by StormTrooper

does it do that on the stock tune? can you test that?

It does that on the stock tune and the tuned maps.

[StormTrooper]

So the tuned maps don't seem to mess with that part?

I drove around started with a slight uphill 3rd gear pull and cruised for 5 minutes. logged that.

At the end of my drive adv multi was back to 1... First to .95 then .97

49deg adv during cruising holy.......

My AFR at WOT seemed to move around a lot... 11.34-12.6

[StormTrooper]

Any information about the cruise timing advance being so high and if it's going to be addressed.??

[brn12345]

Originally Posted by StormTrooper

Any information about the cruise timing advance being so high and if it's going to be addressed.??

Based on what I see in the 2014 roms, the transient fuel table has been modified in that area. This is something I will try soon.

[Vmax911]

Does anyone know if I can use the OFT to datalog the ECU when the ROM is stock? I really don't know much about tuning, so it might be beneficial for someone like me to see what fuel trims, ratios, etc are like under different conditions using the stock ROM, then flash to a canned tuned and not the changes in those values.

[Rombinhood@OpenFlash]

Originally Posted by Vmax911

Does anyone know if I can use the OFT to datalog the ECU when the ROM is stock? I really don't know much about tuning, so it might be beneficial for someone like me to see what fuel trims, ratios, etc are like under different conditions using the stock ROM, then flash to a canned tuned and not the changes in those values.

Yes absolutely. You can datalog any tune, including the stock factory tune. In fact, you can log any BRZ/FRS/GT86, not just the one that the OFT is installed on.

[solidONE]

moar updates!