Overland Torque Tune (OTT) by Overland Tailor

As Jason mentioned below it won't necessarily change the blower's ability to make boost pressure as that is a function of Engine RPM and Supercharger (rotor) RPM. However, the bypass valve that is fitted to these systems makes this a little less straightforward. Due to the design and how the bypass valve is designed to operate, it is no longer a simple function of Engine RPM and Supercharger RPM that determines boost pressure. The bypass valve is there to keep you out of boost when the demand for torque is not present (casual driving w/ low pedal input and low throttle movement). This helps keep the engine fitted with the supercharger fuel efficient during part throttle driving. Our changes in the tune will bring boost on earlier than you'll experience with the Magnuson Tune as delivered. We wont make any more boost (obviously) but you'll find the truck is more abt to get into boost during part throttle over the Magnuson Tune.

I tuned mine immediately after install, but that is on a OTT Development vehicle. I generally recommend our clients drive for a hundred miles or so on the supplied Magnuson tune to ensure the install was performed properly and there are no issues present. If the truck runs properly, there are no leaks, CEL's or the like, the truck is ready to be tuned.

 

Any experiences of MPG getting worse after a tune? Half of my commute is on a highway that ranges between 55-70mph (depends on traffic) the other half is 40mph with a few stop signs.

I figured I'll give it a tank of gas to see where it ends up. I was seeing 20-22mpg's on the regular, today I saw 19mpg for the first time in a long time. I suppose it could also just be "summer" gas?

 

It happens, but most have it be within +/- 1-2mpg of what they observe stock.

It's also not uncommon for folks to drive the truck a little more aggressively as they "feel out" the tune after just getting it. Give it a tank or two as your driving pattern settles back in, I suspect you'll see it return.

Summer gas isn't the issue. Winter blend fuels are the issue.

 

Thats what I'm hoping for. I'll be getting her tuned this week then.

 

Your prompt and concise replies are much appreciated!! I agree with the fact I may be driving a little more aggressively not sorry about it.

Thank you so much!

 

After a few months ours is a tiny bit better. Averages 18 city - 21 freeway. I do get on it more often now though, because... well, I can!

 

I wonder how mine is doing as I'm in boost almost all the time when on the highway... at least I'm hearing the whine of the supercharger almost 80% of the time when at speed - it's a bit heavier of a rig but not over the top. So if the boost comes on earlier is there a drastic hit to fuel economy? (power takes fuel me thinks)

And I read through some of the supercharger facts and it states not to use the bullydog tune as it runs the vehicle lean. My experience from my earlier post getting soot on the truck near the tailpipe and a black exhaust pipe is that I'm running rich... at least that's what I believe is happening and sometimes my nose smells fuel as well, usually when cold. Did they change the tune since the original FAQ's were posted? Just trying to figure out if a tune is right for me as I want to optimize the engine but don't want my fuel economy to tank as well - it's already worse than my Ram 2500 Hemi and I drive it most of the time very tame (slow acceleration, keeping my foot out of it unless going up a hill or passing, etc.). I'm happy to see 15 mpg but most of the time I'm around 13-14... maybe need to buy a 3rd gen seeing guys getting 19-21 haha.

 

I've spent too much time fixated on gas mileage. I'm now enjoying the truck and driving it how I like. If I lose a mile or two per gallon, I'm not worried. Life's too short. Enjoy the things and the people in your life while you have them.

 

AMEN!

 

If 20mpg is what you want along with increased power & driveability, a smaller pulley on a Maggy S/C’d Tacoma is probably the wrong vehicle for you.

The 3G with Maggy or a ProCharger can deliver that, thanks to DI, but not possible on a 2G unfortunately.

Can that be had with the possibility of an extra mpg or two? I believe we can provide a solution for you.

 

Your gearing is most likely the biggest hit to your MPGs.

 

Sorry folks, don't get me wrong (I was whining in jest about the 3rd gen mileage) - I'm OK with the mileage as I know what I've done to the rig... did it mostly to tow a small travel trailer and explore backcountry so I knew what I was getting into. I just want to make sure the vehicle is running the best it can be based on what I've done to it. The soot on the body near the tail pipe is what's causing me to ask these questions or else I would leave well enough alone and just drive.

CadCamMan - you're probably dead on there - I did the gearing for trailer towing before I decided on the S/C and it's worked really well for that.

JustDSM - thanks for that, and if decide on the tune any extra mpg is a bonus, but not the focus. I've already contacted an OTT tuner near me and been chatting - very helpful fella.

 

Newbie here and getting a OTT tune pretty soon here.
The truck sits mostly un-driven in the garage (full tank can last me months) I have been filling with 91 octane because its the only fuel I can get that is pure gas (non-ethanol) as I have read somewhere that ethanol gas is prone to phase separation and not really good if storing or not driving much and can cause issues.
After the tune, can I switch back and forth between fuels? So if I go on a road trip, is it ok to switch to 87 octane fuel and then switch back to 91 octane when I get back or will that cause issues?

 

You will have no problems doing that.

 

Who'd you contact? PM me if you wish. I'll make sure you're taken care of as a previous customer of mine prior to my teaming up with OTT.

 

You will not have any issues running our tune with E0-E10 with Octane ratings of 87-93 pump fuel. You can run higher octane fuel but that's another topic in itself.

The long periods of sitting will make the vehicle more prone to having condensation in the tank watering down the fuel. However, this is probably not really a big deal unless you're in a high humidity climate with large swings in temperature through the day and have the vehicle sitting for long periods of time..

The higher ethanol content fuels will be more problematic than E0 as the ethanol is hydrophilic.

 

I had my OTT maggy tune done yesterday by Masteryota. It's so much better than the magnuson tune. Shes gets on boost earlier in the rpms and pulls much harder up top.

 

Got the tune.

Alex Yug @TacoNesian tried me on Light/Mild first (probably prudent). It was good, but I can handle Mild/Medium - we switched to that after first test drive. I really don't feel the need to 'jump" to Medium on ECT button (only for these special occasions ) and I'm coming from a Sprint Booster that was on race 2. Drove an hour and 10 minutes home on a rollie terrain hwy and all lived up to billing (as expected during my test drives). Dear Lord the cruise control was so much better. One of my main reasons for getting this tune. The Tacoma cruise experience is painful w/ hills.
But the real test are hills you drive a bunch near your home, and really know how pre-tuned truck behaved. Took A long one here, and the truck stayed at 2000 RPM's @70 mph, that NEVER happened before.

Is it life changing? No. Does it now make the truck feel like a damn normal vehicle (the now linear gear progression)? My Gawd YES!
So worth it, as all the reviews say over and over and over. It's not protecting my a** for what I paid to write this. Those who write that (and some do) are frankly, full of crap.

Which begs the question: Why did Toyota drop the ball so badly on tuning this vehicle properly as Alex and I discussed? It's not debatable they did - witness: an entire cottage industry has developed to fix their lack of priority on the Tacoma's ECU. Don't give me that MPG crap. Otherwise, an OTT tune would take a big hit on MPGs , it doesn't. Btw, Alex tells me Toyota has not updated the ECU software since mine was produced in early Summer 2021 - 23's have zero change. Shows you they are on to Gen 4 - the "Snake Plissken, 'He's dead... keep moving' " attitude. So, one of the main answers has to be - Toyota is really Camry-centric as co. and not Taco-centric, vs our little world, as Mr. Yug pointed out and saying how many feature were long standing in the Camry before hitting the truck dept of the building (like CarPlay). Yeah it's' a truck and all that, but c'mon, it's 2023, not 1972. People expect/want current tech. Anyway, suffice to say, Alex and OTT are out there cleaning up Toyota's goof on ECU settings - pure and simple.

Speaking of Mr. Yug, great dude representing OTT in my part of the world. He's punctual, polite, & practical (He has a very nice TRD OR Tacoma, btw - the tires - wow!). The 3 p's you'd like to see from our Military. Also, easy to talk to and a good sense of humor. Young family guy - gives me hope for America. Very pleasant experience, top to bottom.

GET THE TUNE

 

I'm very happy with my OTT Tune.

Thanks to MasterYota!

 

Emissions... the only reason I can figure. Doesn't matter mpg or best power delivery... it simply is what are the lowest emissions they can get while having a safe and reliable engine. And low emissions on one vehicle likely gives them emissions credits elsewhere. My opinion of course... shared by others I know... but who really knows.