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Old 03-20-2023, 09:41 AM #16
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Quote:
Originally Posted by Lexington View Post
Thanks for this Stiles. This gives me a much better understanding of tunes.

When I had my Trooper Limited it came with a power boost button that was standard. When I needed extra power I would simply push the button and get a a nice power boost for lane passing or going up hill. Once I was done I could simply push the button again to turn it off. It was a very nice feature. I was hoping to do a similar set up with my 4Runner.

However, from what I’ve read so far it seems a tune may not give me the little extra boost I was looking for a stock engine unless I make some mechanical modification. I’m not interested in putting a turbo in or run it on premium gas. I just wanted a little extra boost when I need it. (However it’s nice to know that Toyota’s ECU can take advantage of premium. This can be handy for towing). But if you or anyone else knows of a set up where I can get push a button set up and get a little extra boost for when I need it please let me know.

For now it seem it a Boost Commander might suit my needs.
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Old 03-20-2023, 07:10 PM #17
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Quote:
Originally Posted by Lexington View Post
I’ve been thinking about giving my 4Runner a little boost. I’ve been reading the thread below Pedal Commander vs Sprint Boosters and it has provided some very good information. However, I also read another way to give your engine a little pep is to do an engine tune but I’m not 100% sure how it work. I understand devices like Sprint Booster basically speeds up the response time between the pedal and throttle. As for tunes my understanding is it changes the throttle map in the cars computer. Does it actually increases hp a little too or does it just speed up response time like the Sprint Booster?

It looks like devices like Sprint Booster are easy to install and have little drawbacks but what about engine tune? What advantages do they have over devices like Sprint Boosters and what drawbacks they have? Just curious to know before I make a decision.

Thanks
My 4r is OTT tuned. Best money ive spent in terms of value and performance. It does everything the PC/SBs do, plus it actually adds more power and torque. Yes, a supercharger is going to add a lot more power, but that doesn’t make the tune worthless or without value.
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Old 03-20-2023, 07:16 PM #18
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Quote:
Originally Posted by stiles_s View Post
As others have said, a Pedal re-curve (like sprint booster) and an ECU tune are two different things. The only overlap is that an ECU tune MIGHT give you better throttle response, but it'll do it in a different way.

As for ECU tunes for these engines. Just a couple thoughts having tuned a bunch of cars. YMMV, etc.

You have a few things to play with: spark advance and air/fuel mixture. I don't think cam timing is ECU controlled on these things?
- Spark advance either is going to get you close to the "safe" edge with the fuel you use, OR require you to use higher octane fuel to take advantage of the additional advance. Saying you're going to make more power on Regular seems like all you're going to do is have a higher risk of ping and then safety-retard which is kind of a mess. I'd be all for a tune that was made to work safely with Premium.
- Air/fuel mixture. This one can help as well. Sure, you can pour more fuel in in hopes of making more power but this is complicated and again you run the risk of fouling plugs, cats, etc and at best you might make 5-10hp? Just as likely to lose power.

Sometimes tunes like the above can be done effectively if you have "opened up airflow" significantly with a N/A engine. Or if you have changed gearing. You can take advantage of this with a custom tune. But, our airbox flows well as does our exhaust so I don't think there's much there either.

I've got a really boring option to consider: I'm now totally sold on sprint booster on a conservative setting plus Premium fuel without a tune. I did Premium/Regular a/b without SB and felt a difference in low-end torque. The combination of Premium AND SB makes the truck feel like it has more "life" down low. I have a very repeatable gradual grade on the highway that I drive every morning. The truck makes up without downshifting and I can actually accelerate from 60-70 without a downshift. I was never able to do this before.

My intuition based on this is that Toyota does have the ECU programmed such that it can take advantage of Premium. It doesn't advertise it. It wants to bank on the cost effectiveness of Regular for its target demo.
The OTT tune/review on “the other forums” they address your thoughts on the higher octane fuel directly, and share dyno results. The short version is you are correct. Higher octane fuel does yield more power. I got tuned over the weekend and I’m sold. For 20+ models they have TCM access and can change the shift logic, which is a pretty compelling reason to go with a tune, but not everyone owns a 20+ MY. My review is on the very same thread. I may add it to the limited owners thread as well. Id like to get some more miles on it before dropping a long term review here.

Last edited by aggrobot; 03-20-2023 at 07:17 PM. Reason: Added more rambling thoughts.
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Old 03-20-2023, 07:26 PM #19
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Quote:
Originally Posted by honda250xtitan View Post
the vivid racing tune also adjust shifts. it holds gears longer and doesnt shift around as much. so like a tow mode.
I dont believe Vivid offers ECU tuning for 18+ model year 4runners. At least this is what they told me when I reached out to them. The OTT tune is available for 20+ and if I recall correctly, they can tune older 4runners, but don’t have TCM control for 18’ and older models.
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Old 03-20-2023, 07:29 PM #20
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Quote:
Originally Posted by aggrobot View Post
My 4r is OTT tuned. Best money ive spent in terms of value and performance. It does everything the PC/SBs do, plus it actually adds more power and torque. Yes, a supercharger is going to add a lot more power, but that doesn’t make the tune worthless or without value.
Thanks aggrobot for your reply.

A few questions for you.

Do all tunes perform basically the same or are there different types of tunes?

Is the only thing you did was do a tune?
Did you have to add anything mechanically to do this?
Also, are there any drawbacks? It’s my understanding that running the engine a little leaner to get the extra power for a longe period of time can potentially cause other problems down the road such as more carbon build up on valves and potentially shorten the life span of the catalytic converter.

As I mentioned earlier, I’d like to have a on and off button feature. I’m fine with the engine how it is most of the time but I do wish can push a button and have a little extra power when passing or going up hill.

Oh and I have a 2016 TRD Pro

Last edited by Lexington; 03-20-2023 at 07:47 PM.
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Old 03-20-2023, 07:51 PM #21
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Quote:
Originally Posted by Lexington View Post
Thanks aggrobot for your reply.

A few questions for you.

What is a OTT tune? Is it’s the name of a particular tune or type of tune? I’m aware there are several types of tunes but my knowledge in this area is still limited.

Is the only thing you did was do a tune?
Did you have to add anything mechanically to do this?
Also, are there any drawbacks?

As I mentioned earlier, I’d like to have a on and off button feature. I’m fine with the engine how it is most of the time but I do wish can push a button and have a little extra power when passing or going up hill.

Oh and I have a 2016 TRD Pro
Overland Tailor Tuning. I reached out to them via their website, and they put me in touch with a local tuner. No mechanical changes/mods/. The tuning process required the guy to have the vehicle battery plugged in to avoid any power interruptions during the process. Everything he used/plugged in was removed after he was finished.

ive not encountered any drawbacks so far. Its more exciting to drive, so I drive it a little more aggressively. Too soon to tell on MPGs but it hasnt been a bad drop, either.

Im not sure an on/off mechanism would be feasible given my understanding of how this all works. You may want to reach out to a tuner of your interest to find out what they’d suggest.
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Old 03-20-2023, 08:20 PM #22
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Quote:
Originally Posted by aggrobot View Post
Overland Tailor Tuning. I reached out to them via their website, and they put me in touch with a local tuner. No mechanical changes/mods/. The tuning process required the guy to have the vehicle battery plugged in to avoid any power interruptions during the process. Everything he used/plugged in was removed after he was finished.

ive not encountered any drawbacks so far. Its more exciting to drive, so I drive it a little more aggressively. Too soon to tell on MPGs but it hasnt been a bad drop, either.

Im not sure an on/off mechanism would be feasible given my understanding of how this all works. You may want to reach out to a tuner of your interest to find out what they’d suggest.
Thanks Aggbot. Thanks for answering my questions. I saw that Overland Tailor Tuning was mentioned earlier I just didn’t put the two together.

My impression from what I’ve read so far was that tuning gave you a little more power and pep but the drawback where it produced a little bit more carbon and maybe a reduction in mpg. That’s why I was wondering if there is a on/off switch option. As I mentioned earlier my Isuzu Trooper came with this function. So I was wondering if tunes for the 4Runner also came with this option too.

I also didn’t realize that tunes increase pedal response like Boost Commander. I thought they just increased engine power and change gear shifting.

Anyway I’ll call OTT and ask them more about their tunes.

Thanks again for your help.
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Old 03-20-2023, 08:39 PM #23
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Quote:
Originally Posted by Lexington View Post
Thanks Aggbot. Thanks for answering my questions. I saw that Overland Tailor Tuning was mentioned earlier I just didn’t put the two together.

My impression from what I’ve read so far was that tuning gave you a little more power and pep but the drawback where it produced a little bit more carbon and maybe a reduction in mpg. That’s why I was wondering if there is a on/off switch option. As I mentioned earlier my Isuzu Trooper came with this function. So I was wondering if tunes for the 4Runner also came with this option too.

I also didn’t realize that tunes increase pedal response like Boost Commander. I thought they just increased engine power and change gear shifting.

Anyway I’ll call OTT and ask them more about their tunes.

Thanks again for your help.

No problem! I think its probably worth noting that I dont know for certain that my MPGs were impacted negatively. Ive been driving it quite a bit more aggressively and my MPGs havent changed all that much YET. This suggests to me MPG may have actually gotten a lot better, not worse, but only time will tell.

Last edited by aggrobot; 03-20-2023 at 08:45 PM.
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Old 03-20-2023, 11:19 PM #24
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the biggest difference we noticed was it drives better on the highway. itll hold 70-80 much easier than before. it stays in a gear and cruises. heavy 33's and a roof rack dont help

that and the more aggressive shifting.
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Old 03-21-2023, 11:32 AM #25
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Quote:
Originally Posted by spartacus View Post
Without the super charger engine tune wouldn't do much. Adding a bigger maf and remapping the fuel map and throttle curves on a stock engine dont' do much. Adjusting the VVTI timing can give you more torque low and mid rpm at the cost of less fuel efficiency and and VVTI gear wear.
Do you have any more info regarding VVTI gear wear? Id like to learn more about this, and expected wear vs accelerated wear, etc. Ive not heard of this being a challenge in the past, but it certainly sounds like something worth knowing more about.
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Old 03-22-2023, 11:06 PM #26
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the biggest difference we noticed was it drives better on the highway. itll hold 70-80 much easier than before. it stays in a gear and cruises. heavy 33's and a roof rack dont help

that and the more aggressive shifting.
Did you get an improvement in MPG? Im on some p-rated 285s, lifted around 2.5 inches, and look to be averaging 16-17MPG at the moment. Lots more data to gather here, but pretty encouraged with what im finding so far.
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Old 03-23-2023, 08:19 AM #27
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Did you get an improvement in MPG? Im on some p-rated 285s, lifted around 2.5 inches, and look to be averaging 16-17MPG at the moment. Lots more data to gather here, but pretty encouraged with what im finding so far.
from reading taco forums about kdmax tune there should be a slight increase in mpg with it running a tad leaner
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Old 03-23-2023, 09:45 AM #28
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Sprint Booster vs Engine Tunes

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Originally Posted by osugsxr View Post
from reading taco forums about kdmax tune there should be a slight increase in mpg with it running a tad leaner

Yeah, it makes good sense. Just wondering as he has the vivid tune and I’ve gone the the OTT route. It’s been a very pleasant surprise to see an MPG improvement. It’s worth nothing that most of that improvement has been seen in highway driving. More driving to do…


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Old 04-02-2023, 07:37 AM #29
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Some insight on what throttle controllers actually do. Throttle Controllers – A Guy A Girl and A Trail
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Old 04-02-2023, 10:32 AM #30
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For those wondering about the OTT tune and what it impacts, I can share my experience as well. I’m in a ‘22 ORP, with heavy E load 285s, a roof rack, aluminum armor and 2 inches of lift.

With this tune, I was able to choose between a stock/mild, medium and aggressive throttle response. I went with the medium throttle response since I’m not loaded down with steel armor, an RTT and the like. I’m actually debating down to the milder throttle response as when I’m unloaded it can break the tires loose in rain or snow unless you’re super careful.

I think this comes down to having a bit more torque down low with the tune, but the best part of the tune by far is being able to used my cruise control again! I can cruise at 75mph and it holds 5th unless there is a moderate grade, whereas I would spend a lot of time in 4th previously driving the same roads or it would hunt between the two a ton which was frustrating.

I didn’t see any gains in fuel mileage, but it didn’t get worse either.

One thing to consider with a tune and changing your throttle response vs a throttle controller is that it can’t be adjusted on the fly, so if you use 4LO off road, it can seem to sensitive when you may not want it.

Hope this is helpful!
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