3rd Gen Tundra Tuning with VF Tuner

You know who it is and what brand of tuning if any?

 

I think there is still a long way to go to fully unlock the turbos. Magnuson has VF tune info on their website with a set of curves. I believe they are only showing stock vs the Pack 6 . VPtune is also showing the tune with curves but for all 5 Packs. Looking at their curves the highest HP gain is between 3000 and 3500 rpm but is the 85 claimed. Almost 4k for 85hp at the crank is a lot to chew off. On VFtune site they are showing maybe 30hp gains with the tune which is $300 by itself. By contrast I can pay $600 to get an APR Plus tune which gives over 100 hp/100lb-ft with no mods required. It would be great to see APR get ahold of the maps. They have the experience with superchargers and turbos.

https://magnusonsuperchargers.com/p...rmance-package?variant=46810208370944#fitment

https://vftuner.com/products/vf-tuner-wiflash-tuning-kit

 

What does APR offer for the Tundra? I’m not seeing anything on their website.

 

Unfortunately nothing. I mention them because of their experience unlocking power from super chargers and turbos. It's very possible our engines are locked in a certain way as one model year of the 3.0 engine for the Audi Q7 couldn't be unlocked like the others due to the ECU.

 

Have you taken a look at the VFT maps? Quite a bit of control. I’m currently working on v4.1 of the recalibration.

 

I'm not a tuner and haven't looked. I've been reading some of the threads and dealt with Uprev for my Titan. Looking at the site again it seems like the gains are stock truck with different grades of fuel to get to the top numbers. That makes more sense and are good numbers for stock.

The Magnuson website is the one that confuses me. If you can get 50-70hp and around 100lb-ft from the 93 tune what are the numbers as the performance parts are added?

 

Looks like with the bolt ons and the tune they’re advertising 85/85 with 91oct.

 

They might not increase hp but they'll support it. You will be able to do multiple high hp runs before your intercoolers heat up and you lose hp

 

The logic for temp enrichment in the Toyota maps puts the AFR at about 8.5 at its richest point. At least from what I’ve calculated based off Lambda.

 

That's got to be blowing black smoke like a diesel at that point. Thats REALLY rich.

 

On board AFR goes to 10 or 10.5 at wot..dont think I've ever seen it at 9 or 8

 

That seems spot on for a factory tune.
What’s wild is how rich that is and how much power is left on the table if it were to lean out a bit.

I wish I knew how the port and DI crossed over in terms of fuel supply to the cylinders.

my GTI was in the 11.5-12ish range on 93 and made 400whp.
If you take knock resistance of the fuel and cylinder output I’d conservatively say that these engines (if they could hold together) would be around 550whp on 93.

But that’s not taking into consideration the HPFP and LPFP and the injector sizes.

 

This is kind of my point it should be possible to get much higher gains with performance parts.

 

Unfortunately this gets more complicated than that.

You can improve the OEM setup, and get some marginal gains, but without a tune to take advantage of the fuel maps, you're gains will be minimal, at best.

Now, if you have the ability to adjust fuel maps, torque tables, cylinder filling charts, boost levels, wastegate duty and ignition timing, the sky is the limit until you chuck a rod out of the block.

The only reason I've shied away from the JB4 (not because it's not safe), is because of the potential uncertainty with the V35A-FTS and its crank bearing longevity.

For comparison, my GTI was APR tuned at 1k miles and was beat mercilessly until I sold it at over 3 times its rated power level from the factory. Never hiccupped once.

 

It’s also controlled by temperature as well, so as long as you’re not getting over that temp threshold, then it will only dump so much fuel.

 

I'm interested in putting a tune on mine now that I have the recall replacement engine. But I do hope this new engine has all of the fixes Toyota has implemented. Is Magnuson/VF Tuner the best option as far as safety parameters, reliability, and warranty?

 

cat/turbo protect...I turned that off on my previous car once I went catless and full E85.

 

YMMV.

No idea. To be fair, the JB4 keeping canbus connection to the ECM is probably pretty solid.
That’s a big draw. But nothing will protect against pure mechanical failure.

 

I doubt they’ll warrant your engine if something happens with their product. I can get you remotely tuned as well if you like.