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

[StormTrooper]

Well I've done 2 logs....

Noticed after having to abort a pull.... Didn't realize people were going 45 on the freeway.
My adv multi is .76 instead of 1.0

Must have saw some knock somewhere. Guessing since its so cold out

[Tromatic]

Originally Posted by shiv@vishnu

And yes, the ECU info section is still written in Italian. There is a new update coming out which will provide the ability to store more than 2 maps in the OFT. The language bug will be sorted out then since it's not really an urgent fix at this time. Shiv

I'm quite sure the Italian added at least 5hp.

[Kodename47]

Originally Posted by StormTrooper

Well I've done 2 logs....

Noticed after having to abort a pull.... Didn't realize people were going 45 on the freeway.
My adv multi is .76 instead of 1.0

Must have saw some knock somewhere. Guessing since its so cold out

Cold shouldn't be a reason for knock. Where does the IAM start at? Sometimes it's low RPM high load, like 5th/6th gear at low speed, where the engine can knock and cause IAM to drop.

My log procedure was to spend a few mins simulating all types of normal driving. Pulling away, short shifting 1st-2nd-3rd and cruising etc and then do WOT pulls when oil temp is up to scratch. This should then allow you to see any areas of weakness across any areas of the map. Is load logged as well?

[jamesm]

iam dropping is always bad. it means your ecu entered rough correction, which means it detected serious knock multiple times in a row. you can read up on the parameters required for this to happen, but trust me it's bad for your engine.

but hey, at least your iam works. most of the e-tunes i've seen just effectively disable it. in any case, i'd get that resolved sooner rather than later.

[Kodename47]

Originally Posted by jamesm

iam dropping is always bad. it means your ecu entered rough correction, which means it detected serious knock multiple times in a row. you can read up on the parameters required for this to happen, but trust me it's bad for your engine.

but hey, at least your iam works. most of the e-tunes i've seen just effectively disable it. in any case, i'd get that resolved sooner rather than later.

Have you assumed that his IAM starts at 1? If it started at 0.7 and hadn't noticed then seeing 0.76 isn't a bad thing.

[jamesm]

Originally Posted by Kodename47

Have you assumed that his IAM starts at 1? If it started at 0.7 and hadn't noticed then seeing 0.76 isn't a bad thing.

yes. good call. so used to setting initial to 1 lol.

[Kodename47]

Originally Posted by jamesm

yes. good call. so used to setting initial to 1 lol.

Thought so. I know most are set to 1 but I believe Shiv's aren't out of the box as they're a little conservative.. That's not to say that people don't change it.

[cnk]

Originally Posted by Kodename47

Thought so. I know most are set to 1 but I believe Shiv's aren't out of the box as they're a little conservative.. That's not to say that people don't change it.

If he's using the 1.34 Stg1 map, then the IAM is set at 1. I just verified it on the ROM.

[Rombinhood@OpenFlash]

There is nothing wrong with adv multiplier moving around with Vishnu's tunes. From what I understand, it's actually to be expected with the pump gas maps. It's also possible but far less likely on the e85 maps. It's only when adv mult starts to consistently drop low (below 0.5) should you consider making the mapping less aggressive. Short of that, let it do what it wants to do. That's what coarse learning is there for. This general guideline applies to NA applications moreso than boosted ones though.

[bfrank1972]

Originally Posted by Rombinhood@OpenFlash

There is nothing wrong with adv multiplier moving around with Vishnu's tunes. From what I understand, it's actually to be expected with the pump gas maps. It's also possible but far less likely on the e85 maps. It's only when adv mult starts to consistently drop low (below 0.5) should you consider making the mapping less aggressive. Short of that, let it do what it wants to do. That's what coarse learning is there for. This general guideline applies to NA applications moreso than boosted ones though.

Hmmm that's not what I read in this:

https://docs.google.com/viewer?a=v&p...dlMWVkYjI1Njg4

Rough correction pulls timing back everywhere and is typically said to be a sign of an 'unhappy ecu'. I am no expert, so correct me if I'm wrong, but you don't want rough correction - say your timing advance curve is peachy until 6000 rpm where it gets into severe knock (due to how advance is set), if rough correction kicks in it will pull timing everywhere (i.e. lower rpms where you don't need it), correct? Maybe the new ECU calculates timing differently than what's illustrated in the 'subie newbie' guide?

Thx

[Rombinhood@OpenFlash]

Originally Posted by bfrank1972

Hmmm that's not what I read in this:

https://docs.google.com/viewer?a=v&p...dlMWVkYjI1Njg4

Rough correction pulls timing back everywhere and is typically said to be a sign of an 'unhappy ecu'. I am no expert, so correct me if I'm wrong, but you don't want rough correction - say your timing advance curve is peachy until 6000 rpm where it gets into severe knock (due to how advance is set), if rough correction kicks in it will pull timing everywhere (i.e. lower rpms where you don't need it), correct? Maybe the new ECU calculates timing differently than what's illustrated in the 'subie newbie' guide?

Thx

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.

[Tromatic]

Originally Posted by Rombinhood@OpenFlash

FYI, the guys at Vishnu are working on a nice video tutorial on how to conduct, view and analyze datalogs.

Maybe it's a generational thing, or maybe even a Marine thing, but I would REALLY like to have a written manual for this stuff, especially the tablet setup and ECU flash process.

[Rombinhood@OpenFlash]

Originally Posted by Tromatic

Maybe it's a generational thing, or maybe even a Marine thing, but I would REALLY like to have a written manual for this stuff, especially the tablet setup and ECU flash process.

I agree that a written doc would be a good idea. But you'd be surprised how many people don't read docs and would rather watch a video instead. This is why they have been so involved with video tutorials. Seems to get the job done better than written docs for most people. But I do see your point and agree 100%

[ame]http://youtu.be/MWjdC3TEWyk[/ame]

[StormTrooper]

Originally Posted by jamesm

iam droppingremays bad. it means your ecu entered rough correction, which means it detected serious knock multiple times in a row. you can read up on the parameters required for this to happen, but trust me it's bad for your engine.

but hey, at least your iam works. most of the e-tunes i've seen just effectively disable it. in any case, i'd get that resolved sooner rather than later.

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.