Tacoma - OVTUNE - VFTUNER - Update Info and Original Development

Didn't miss it. I saw the post about the big/little endian issue on the build. This hasn't been any clarification on the timeline of the fix so I'm still waiting.

 

It takes longer than 10 secs.
I'd retry.

 

Thanks I reloaded and this it loaded like it should.

 

2.0 IMO truly is the best and biggest change from my stock tuned truck. Not enough miles to say for sure but I’m very content with this version and probably will never sell my truck now due to drivability. Thank you @OVTune

 

So the only thing I've noticed with my truck is that once I get to sixth gear, if someone slows in from of me to say 50mph then I try to accelerate slowly as I squeeze into the throttle it seems to stay in 6th and it will accelerate but I'm getting some TC shudder. I did reset learned values on AT so it might just need some time. 04A61 on 87

Almost like it should have unlocked the TC till I got back up to 60 or so then locked up again.

 

This cracks me up - I just did this 2 weeks ago for my daughters Discovery II to get her back home.

 

Coming from 1.05.1 91 base, the new 2.0 beta is so much better - shifting/throttle is much more predictable, and the weird 2-stroke jump at 3500rpm is pretty much gone. Interesting observation - the truck accelerated noticeably differently with each 1500-5500rpm pull during knock learning, even after the fourth pull ... so there definitely seems to be some adaptation happening. I'm on 92 octane.

 

link?

 

I'd say this doesn't really address his point. He specifically asked about going from 87-93. If the truck has already learned on 87, there is a good chance it's programmed not to ever push the tables back up to 93. That is unless the truck regularly advances the timing just a bit to see what happens, maybe it does. Matt's quotes say it will learn from bottom to top, but that's during the learning process where it's actively trying to make adjustments.

 

exactly my question.

if i let the wife drive it all week to work on 87. then i need the extra power to tow for the weekend so i fill up with 93... do i need to do anything else besides fill the tank with better fuel.....

 

Reading between the lines, learning from more ignition advance to less is quick/reactive (as it should be), while learning from less to more is longer term/more adaptive (also as it should be). Without specifically driving the truck to force a quick learning cycle (i.e., 100% load from idle to redline a few times), it's likely to take a couple hundred miles of normal driving to relearn the advance curve for higher octanes.

 

So you're saying that it only "learns" the octane once, after you first flash?
That's not my understanding, but ok.

 

Unless Matt says otherwise I would say this is likely the case. Would be a nice feature to have on the handheld tuner, tell it you put it new gas so redo octane learning.

 

@OVTune are you going to keep GL in D when ECT is enable? I love how GL work on 2.0 but would love to drive in D and ECT without GL. GL enable in S with ECT seems to be the way to go.

2.0 beta has been very good although I do miss the tip throttle on 1.05.

I think you nailed it on 2.0. You have have come a long way and its near to perfect. Hats off to you sir!

 

I did log the data on this occurrence. Did not have time to look at
I was in D. 87 fuel. No values reset
City street, 25-30 zone coming to overpass. Must be in 1100 rpm range.
This is was after I flushed and I'm sure it needs more miles.

 

2.0 ole is pretty good.Im happy with it. Easily the best Tune to date. Now teach it to run E85 And give me some more ponies

 

Same observations here on different acceleration behavior on each pull. First pull I was thinking to myself "man, this kinda sucks" as it was pretty sluggish and by the last pull I was thinking "holy shit, this rocks!"

 

The whole point of this new tune is that it learns on the fly so you no longer have to sit in the gas station and reflash to a different tune...

 

I don't believe that's what I implied. There is certainly a period shortly after a reset where the vehicle is more aggressive in "learning" what it's working with. This has happened on ECUs for over a decade, my 07 subie does this when in closed loop after a flash.

This is a good takeaway that describes my point:

This type of behavior would make sense from a safety standpoint, and once a vehicle has learned what it can do for timing advancement I don't see a lot of reason for it to go advancing timing further periodically just to test whether or not previously observed knock will return.

 

"If the truck has already learned on 87, there is a good chance it's programmed not to ever push the tables back up to 93"

Ok, I guess I totally misunderstood what you said here.