Want more power from 2006 vvti 4.7L v8

Anybody pick up this tune on their 2UZ? User reviews would be great!

 

So I ended up contacting Cole Hershberger/Cemented Tuning and he installed the OTT mentioned above. I went with the mildest throttle response possible and do not regret it, as it is still more sensitive than the stock tune. I did NOT want the 2nd gen style throttle sensitivity.

Most noticeable differences? Might hold gears a little longer, shifts with a little more authority but not enough to be disruptive to daily driving, and it may have a little more umph at WOT. I'm lifted 2" with E-rated 32s and FN Wheels... So take that into account. EDIT, I was running 91 octane when I got the tune, and the tank before. I have now settled in at 89.

I will say, comparing apples to oranges. The OTT on my 4.0L Tacoma was a world of difference, awakened. Cam gears were simply a cherry on top, but the heavy lifting was the tune. The difference is NOT as big with my Tundra.

For reference: Here's the 1GR-FE thread. https://www.tacomaworld.com/threads/1gr-fe-single-vvti-dyno-testing-by-ott.759616/

One last thing I'll say, as I do anticipate some of the regulars here to poo-poo tunes. Is that the OTT guys are on the right side when it comes to the returns one may get from these pursuits when regular maintenance comes into the equation. See here: https://www.tacomaworld.com/threads...no-testing-by-ott.759616/page-5#post-29157640

My plugs have 50K on them and look decent, they are SK20R11 Densos. Air filter is fresh, fluids are all fresh too... (My front hubs are noisy but that wont impact Dyno only my butt Dyno). I'll be the first to admit that the best thing I could do is keep up with regular maintenance, the tune is just squeeze a little more. Tacoma was night and day, this was a little less so. If I could do more to the engine I would, but I am not going to trade long term reliability or daily drive-ability, and if I wanted cheap power I'd persuit it with my LM7 Silverado, as there is much more limited cheap power for these trucks. Headers maybe? too many other things on the regular list to prioritize!

Cheers all

 

Curious - Regular Fuel or Premium?

 

Haha I was just about to edit this in when I got interrupted. At the time I got the tune, it had premium in the tank. Typically I run 89 tho as far as balancing cost vs advanced timing. Also, PNW winter gas for whatever that's worth.

I haven't put nearly the miles on this truck that I did on the Tacoma before the tune. So maybe I hadn't settled into it enough to appreciate the OTT? But these trucks don't suffer the unresponsive pedal the way that the Tacos do either, IMO, so there is that sensation in the mix too?

I really need someone with a similar DC VVTi truck to come drive mine.

 

There’s really no “settling” period for the tune. Once flashed, the calibration runs as intended. While some adaptive trims occur, they’re minor if the tune aligns with Toyota’s strategy, as OTT’s does. The most important adaptive, in terms of performance, typically completes within 10-20 miles of driving at operating temp—assuming consistent fuel quality.

Most perceived gains in N/A trucks stem from throttle mapping. Tacomas have a noticeably neutered throttle profile, so the difference feels more pronounced. The 4.7L already has a more aggressive factory throttle, making the improvement more subtle. Most Toyota N/A platforms net around ~10 hp/tq across the RPM range, with the 5.7L being the exception.

Also, fuel quality matters. Running regular instead of premium can reduce gains by around 20%, based on our testing with other N/A platforms, as the posted dyno was on premium.

 

Heard.

I meant settling into the truck as a baseline before the tune. The Tacoma... I was plenty acquainted with the lack of power. The Tundra I was still honeymooning when I got the tune! So my perceptions may be different in my own comparison.

Anyways, it feels improved and I'd run premium all day if I could! Speaking of premium, have you done any 2UZ boosted tunes?

Thanks as always Justin!

 

I've personally done a small handful. Most opt for standalone engine management which I personally only do in-person. OTT specifically caters to the OEM ECU folks.

It's no trouble for us to do. I'd be happy to work with anyone who has a suitable project and is open to visiting the SLC area and I'll cover the dyno session.