[Official] Valley Tuning Thread

Hello there! Been on the 2.1 Aggressive file for a few weeks now on my '21 AT TRD OR, and have a concern. In the lower RPMs with higher load, such as 40+mph / highway cruising, when more power is needed but a downshift is not triggered the truck starts to shake fairly heavily, it's felt in the seat and feels like I'm on a bumpy side road. From my experience, feels like when I would experience high levels of knock correction I.E. bad fuel / wrong octane on my previous heavily tuned VW and BMW. I am running 87 octane because the added top end isn't necessary for my situation, and to save on fuel costs. Is there a minimum octane requirement for the 2.1 file, or is this a one-off occurrence?

Edited to add: Once RPM's cross roughly 2200RPM the shake is no longer present or perceivable. Likewise, when a downshift is triggered through heavier throttle input, shaking stops as well.

 

There is no minimum octane rating associated with the tune. You can safely run 85 on it.

Seeing as you are using regular fuel, I suggest resetting your LVs and allowing the truck to return to normal.

 

I will do that tonight. After first flash I forgot to do so, and once I flashed the gear lock 2.1 file I reset LV, trans and DTCs immediately afterwards. I'll post back with an update after I can put some more miles on it.

 

If you are on a GL file, DO NOT use the gear lock function for 50-100miles after a value reset. This will altar the truck’s learning process and put you in the same situation

 

I’ve got about 2 tanks in and I’m pretty impressed by this tune. I’m running on 04b33 5.29 33’s Light

I Just logged my best mpg ever since my switch to 5.29’s Lift and Heavy ass 285’s (33’s)

logged 18.6mpg. 98% 1 lane highway, 2% freeway. On 141 mile trip. This is Speedo corrected for tire size actual #’s

I recently switched to the valley runner tune and I deff think I’m running about 1mpg higher than on ovtune 2.0F

truck looks fairly stock in stance but has estimated 300lbs of added weight normally full aluminum skids, steel sliders, full size spare, tonneu, bed mat, tools. This time the truck was loaded with a full bed of gear and family of 4. I’d estimate my payload to be around 800lb over stock this trip.

overall the tune works very well. Seems to be in the correct gear. What I like most is it isn’t quick to drop two gears based on pedal the way 2.0F did. You really have to give it more pedal to get it to drop that second gear which is awesome. I noticed Proper downshift behavior for steeper engine breaking.

adaptive CC works very well. I did have one instance where it got trapped in 4th but I’ve learned to just give a tap to the throttle to get it to upshift if it gets stuck or if I want it to upshift sooner than letting the truck decide.

Overall I’m very pleased and support was spot on and very responsive in answering all of my questions. Looking forward to this winter where I will log hundreds of light towing miles towing my single snowmobile trailer. Can’t wait to see how the tune handles towing my Travel Trailer as well.

 

Hello all, quick question. I just flashed valley runner yesterday and cleared LV’s. I’m on the light pedal configuration. Is it normal for the throttle to be very touchy after flashing? Does this eventually settle? Can’t help but feel like the throttle is a tad bit jumpy when I first give it some gas. Thanks ahead of time!

 

It is pretty touchy. Including the light throttle compared to stock or ovtune 2.0f. I’ve started to get used to it but still have instances where I cause the truck to jump. 5.29 gears would make it even worse that’s what I’m on.

 

I hated it at first, my wife even mentioned how jerky the truck was off the line, but now it's smooth as silk. I don't know if I've adapted or the truck did.

 

I think it's us adapting, not the truck. My wife still can't drive the truck without it bucking. If I slip up every now and then, like I did this morning in the rain, you can definitely spin them off the line. (In this case I wanted to accelerate moderately, instead the rear of the truck spun around on me!) Slow speed maneuvers are especially jerky. I just want a linear throttle response, like the old days.

 

The dead pedal when wanting to downshift is a bit concerning. I find I need to push the go-go pedal more than expected to get a reaction. Running 04A61-OI-VR-2.1 [31in,3.90] (Standard) AGM.

 

Yeah I added a urd crossover ypipe and updated to most recent 2.1 . I've done reset on lv for ECU and transmission. I'm on my fourth tank of gas and tune is finally settling in . I still have issues with the tune wanting to go back to 4th gear downshifts. My mpg are around 20mpg. My weight of truck sits around #5250

 

I am only seeing 16.5mpg average for a completely stock truck. The dead pedal is definitely a glaring issue, but one that can only be fixed by reflashing the TCU - which our tuners don't have access to yet.

 

Go through techstream and reset the transmission learn values.

The tune prioritizes 5th gear over all others, however it’s not afraid to downshift when needed.

Try the reset and see how that affects it. Typically this will resolve issues regarding transmissions within a tank or so.

 

Clicking on ECT will get out of dead pedal. I drive the same stretch of road everyday to work. 3 hills back to back I would get stuck in the dead pedal. Now I just click ECT on and goes to 4th when needed and back to 5th when needed. Then I turn it off or leave it on if I’m feeling fast and furious.

 

I too also have to use ect I have a whole coast line of up and down hills and steep grades

 

I figured the dead portion was in how the tip in/tps voltage curve was tuned. This tune definitely has a steeper ramp than others I’ve ran. Tip in isn’t necessarily more agressive but that that initial transition doesn’t seem as linear.

 

It is not a linear transition. This is what allows our knock values to be the best on the market and the low end to be precisely controlled during slow speed maneuvers.

It does take a small amount of learning to adjust to this pedal.

As for the dead pedal, this has been an issue that has come up in the recent weeks among many different tunes. I hypothesize it could be due to changes in temperature/air delivery and the ACIS system. Typically, all the tuners use very similar settings here.

If you have a long enough grade and patience, you can gradually apply pedal more and more thereby causing the truck to remain in 5th gear with nearly 80% pedal. Well outside of any tune parameters, however you will remain in the ACIS low/high rpm range.

On the same grade, if you apply pedal slightly more aggressive than previously stated, you will be able to achieve a downshift to 4th as early as 38% pedal.

It is for this reason why we also see cruise downshift on grades where pedal driving will remain in a higher gear. The cruise system does not apply gradual changes to the throttle body, it is electronic abrupt changes. Unfortunately, around where I live, there are a few hills that cruise will ALWAYS take 4th on yet I’m able to pedal drive it in 5th just fine even with acceleration.

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That being said,

We are experimenting greatly with ACIS changes as well as redesigning our shift logic. The goal is to achieve the perfect scenario where the truck is able to effectively climb up grades in 5th while increasing rpm gradually. Essentially eliminating the paralyzation of RPM from ACIS. (80% pedal, 5th gear, no rpm change)

These changes will first be implemented through the sport tune and, if they prove successful, then be translated over to the standard tune files.

 

Right on. It would be nice if there was a way to completely drop the simulated atkinson cycle but I haven’t seen any that were really effective. I know ov had a full Otto tune for a little while but some issues arose. I wasn’t knocking the throttle tip in at all, it did take some adjusting but I’m used to it and the more the tune settles the smoother that transition becomes. The pedal holding the gear isn’t a problem specific to these rigs unfortunately. GM and Dodge have the same result and have for years, down shifts will occur in cruise but you and pedal it into gear. I think when my torque management was removed from my old gm it almost completely went away as the way it pulled timing was different in cruise vs manual input. I’m curious when tcm tuning is available how the torque demand vs tcm shift logic lets you guys tune them.

 

Very well said . For sure pedal driving I noticed 5th can really hang there, with like you said %80 throttle . I'm still pushing the abilities of this tune everyday . Fuel mileage is pretty freaking awesome .I keep getting steady 20mpgs. I'm curious if the new rebuild of the sport tune will help my coastal roller coaster here in Washington state .

 

I’ve played with some of the transmission input and output shaft targets along with MANY torque converter settings. It seems like they won’t help much without full TCM access.

once we get TCM access, it’ll be a goal of ours to ground up redesign transmission values for shifting and targets.

I believe the way to go right now is to push this engine as far as we can while maintaining the mechanical integrity of the product.