OTT Tune for stock NA Tundra

Got my tundra tuned about a week ago, I chose the medium/spicey option. Overall I noticed a slight difference. I’m not sure if I would do it again, especially for the price. The throttle response is great, haven’t noticed a huge difference in shifting patterns.

 

Our Standard shift schedule will feel very similar to OE if you’re light on the accelerator pedal. Not much needs “addressed” there.

If you’re looking for something different with your shift schedule, communicate with your tuner and let them know what you’re after. OTT has a “Standard”, “Standard +”, “Sport” and “Tow” shift schedules. Our base files are configured with Standard in normal and Tow in Tow/Haul.

We can configure the available profiles in any configuration you wish. Or work with you to develop an individually custom profile if you wish. Reach out to your tuner.

 

the tuner offered a mild/mild-mild/medium-medium/spicey-spicey/extra spicey throttle response.Which basically meant how touchy the throttle response. He didn’t go over any “shift schedules”.

 

Those are just throttle settings.

I've posted an internal memo on this for the guys. I'm going to send you a PM. Apologies on the mix-up with our retailer.

 

I suspect many people who aren’t feeling much difference with the tune aren’t running premium gas. OTT’s dyno shows an additional 20-40 lb/ft of torque across the mid range, which should be very noticeable. But you only get that with premium.

 

@JustDSM - can you clarify something with my tune?

My local tuner says that nothing can be done that changes the tow/haul mode. What actually happens with it?

Is there a way to map a different throttle response to that button as well as different shift patterns?

I find the throttle tip in too touchy when driving around normally but it’s good when towing.

Thanks

 

Yes, we can configure the Tow/Haul mode with a completely different throttle profile. Depending on which throttle profile you're on, the tow mode is configured to either be the OEM throttle settings, or configured in a throttle setting that is one step up from "Normal Mode". Each will have a tow specific shift schedule that is similar to stock, but refined on the base file.

We can also configure the Tow/Haul mode with a different shift schedule is better suited for street drivers who do not tow, our Sport setting.

Let your tuner know you need to adjust the "tip in" of your normal mode. We can make that adjustment for you no problem. We'll get you in and make some adjustments to get it where you're comfortable.

 

This is good information - thanks! I see that Brody just texted me too. Guessing that isn't a coincidence! I'll chat with him about making an adjustment.

Thanks!

 

This is very true. I had OTT tune my N/A Sequoia and it was WORTH EVERY PENNY. Throttle response is better - as it should be and can easily be adjusted - but power and power delivery is also much better. I've seen Justin make power with these vehicles and was blown away by how much improvement could be made on a N/A vehicle in terms of additional HP. But that power is made THROUGHOUT THE POWER BAND, not just in one lumpy peak or on the top end that you will only see if revving it to the moon. From my understanding of tuning, this the best case scenario as far as safe, effective tuning for power delivery. It also happens to be the best case for 99% of drivers that don't floor the vehicle 100% of the time. The dyno graphs from stock to tuned N/A look almost identical except you pushed up the tuned graph to make more power almost everywhere.

Funny story, though - unbeknownst to me, my wife had filled up with 87 instead of premium the tank before I had it tuned. When I took it for a spin, it had a big flat spot in the mid range which showed up on the engine log as pulling a lot of timing in that same range as the flat spot. I asked my wife where she filled up, thinking perhaps we got some bad gas, and found out it was 87. Next tank of premium (which we normally run anyways) and the change was very noticeable.

I'm not contending that your experience is wrong @Js18tundra , just that it sounds atypical. OTT takes tuning these vehicles seriously and has excellent results to show for their hard work. Perhaps you can get a log to your tuner and see if any adjustments need to be made?

 

I actually got it all worked out, I met with my tuner and I ended up with a standard+ trans map when not in tow haul. It’s way better now. It’s a whole different truck. I think there was just a small mid communication about how the process works. But they definitely made it right. Happy customer.

 

Does this tune keep the AFR's really safe? I tow my 5500 lb travel trailer with my LX570 and push it pretty hard(lots of foot to the floor on grades at high elevations and temperatures), so I wanna make sure if I was to go with a tune like this I wouldnt have any issues as far as excessive EGT's and cat protection and what not.

 

It’s richer than stock in many areas, and slightly leaner in a select few. The AFR targets are where they need to be based on ACTUAL use of the vehicle towing in the mountains, flatland cruising with minimal weight and everywhere in between. There’s not much to be gained leaving these engines out like it was an LS.

It’s much more than just a “dyno tune” that addresses WOT only. We’ve got a fully developed calibration that I believes complements the character and function of how most use their Tundra quite well.

If your expectations are realistic, I think you’ll be pleased. If you expect stump pulling turbo diesel torque out of a N/A gas engine, you probably shouldn’t bother as it just won’t be ‘that’.

Hope that helps. Let us know if we can assist or answer any detailed questions. Info@overlandtailor.com

 

I tow my 7000 lb trailer in similar conditions with the OTT tune. Zero issues or concerns related to exhaust temps.

Seat of the pants while towing, there is a noticeable difference between 2500 and 3200 rpm, especially in S4. Less pedal to the floor, smoother and stronger torque delivery. But a steep grade is still a steep grade unless a supercharger is in play.

 

even with a supercharger a steep grade kicks my ass while towing

 

Shhh! I’m telling my wife that a supercharger is the cure for every hill!

 

Let me know if that works...

 

Happy to finally start researching this a little more in detail. I have Master Yota who's going to be in my area this weekend and I'm planning to have a tune done on my truck. My truck is bone stock other than a drop in dry flow air filter. I do quite a bit of towing with my truck and a 7500 lb trailer. Would love to see some fuel mileage increase but I'm not going to be upset if I don't. Definitely would love for it to not scream stuck in a gear when pulling a hill. So I'm hoping the tune helps that out for sure. I kind of drive the truck like a grandpa. Just because it's a truck, and I'm used to driving it with a trailer attached so it's always smooth inputs. I hear some people say that they're using the tow haul button to increase the throttle sensitivity. I don't know if that's what I want. But I would definitely want the torque converter to lock up more frequently when using the tow haul mode. I did install a auxiliary transmission oil cooler using parts from the 2018 and then ran my own hoses to a cooler that's mounted in front of the radiator. Since Toyota decided it was a smart move to do some stupid warming Puck for the transmission on the 2019 and 2020 and maybe the 2021. I have a huge thread on the forums regarding this issue

 

Tell your tuner what you would like for throttle sensitivity in both regular and tow haul mode. You may need to try a few settings to get a feel for what works for you. I also tow frequently with my truck so I had them retain the same step-up in throttle sensitivity for Tow/Haul mode. Justin even went so far as adjusting the regular throttle to somewhere between their Mild and Medium setup for me; I'm not saying that most tuners will do that, but it was tailored for me and my truck (and the supercharger with stock tires made the Medium throttle more like Medium+A Dash of Ghost Pepper) and I very much appreciated the effort that goes in to something that's seemingly small. I suspect the standard Mild/Medium/Spicy setups will work perfectly well for you.

Even though the throttle is more sensitive in Tow/Haul, the step is well suited to the added weight of a trailer so it doesn't feel like it's more jumpy when you are hitched up.

Also, just as a point of clarification - the warming puck on the transmission is present on all Gen2 tundras; it's just the cooler that disappeared in 2019. The puck helps get the fluid up to temp, especially in cold climates (which I experience, so I appreciate the presence of the puck). My '15 sequoia is also missing the entire transmission cooler and only has the puck. I will remedy that soon, but intend to leave the puck.

All said, OTT did an excellent job with the N/A tune. I don't feel like it was a few small tweaks to the existing program, but a completely different and much improved tune that makes the vehicle much easier and more fun to drive. Almost like it takes less effort, if that makes sense. I have the N/A tune on my sequoia and it is leaps and bounds better than the factory tune, IMO. Definitely worth it.

 

All I know is in 2019 they removed the external transmission cooler from the tundra. Yes I agree while I'm warming Puck has its pluses. By getting the transmission fluid temperature up to Optimal fluid temperature quicker is great. But you can't tax the cooling system of the truck to do two functions and cool two completely separate systems out of one properly. This was brought into my thread frequently regarding that concern. One system is not designed to to cool to completely different systems.

Anywho, my tuner hasn't really talk to me about how to do any of these tunes on the truck specifically. Basically just said he's going to be in my area and here's the link to pay for the deposit for the tune when we meet in a Giant Food Stores parking lot

 

If he's an OTT tuner, he'll go over all of it with you there. It doesn't take long and the tune is well-suited to the truck and driver.

 

well, i got it done. I did the mild medium tune. i noticed right off the bat it holds gears longer for sure and the idle is at like 650 rpm's now. other than that, so far. nothing has been noticed. It will take a while for me to see the benefits since the truck sits A LOT in my garage. I mean its a truck and its mainly used to tow my track car and enclosed trailer when i spend the weekend at the track. i have a company vehicle which i drive 5 days a week and only drive 1 of my 5 vehicles on the weekend IF i go anywhere. only time will tell, we will see how it goes. im hoping to see some fuel mileage, that would be awesome!