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2016 OVTune Tacoma 3.5L Manual Transmission / Engine ECU Reflash

Discussion in '3rd Gen. Tacomas (2016+)' started by OVTune, Oct 18, 2017.

  1. Aug 7, 2018 at 6:34 PM
    #7041
    MOC221_

    MOC221_ Well-Known Member

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    Sorry???

    :notsure:

    Apparently all the good stuff is happening in September!
     
  2. Aug 9, 2018 at 2:34 PM
    #7042
    Trident904

    Trident904 Freelance Mammographer

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    Judging from your avatar one could assume that you wheel your truck. Why would you ever consider running turbo's in an offroad vehicle? Are you doing high speed desert stuff or crawling? Turbos will provide no benefit to a crawler.
     
  3. Aug 9, 2018 at 2:38 PM
    #7043
    Shellshock

    Shellshock Well-Known Member

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    Ziggy doesnt crawl, but he needs the power to pull out all the fools that get stuck when he's out cruising the trails.

    I'd consider a turbo setup, could help tremendously towing. I'm undecided at this point, I think it'll depend mostly on the timeline and if Toyota updates the tacoma powertrain anytime in the next couple years (I'm not counting on it).
     
  4. Aug 9, 2018 at 2:45 PM
    #7044
    Trident904

    Trident904 Freelance Mammographer

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    Would definitely help towing as long as you're tuned where it'll spool up at a low enough RPM. One thing people don't get about Turbos is that they are useless at lower RPMS. Myself, coming from the turbo Supra world in the mid 90's there's a lot of work that has to be done to get low RPM spooling. It cracks me up that some of the people on here think that a turbo is going to make them wheel hard AF or make their rock crawling experience truly amazing. I get it if you are a desert racer, but for rock crawling, a turbo or super charger is completely useless.
     
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  5. Aug 9, 2018 at 2:52 PM
    #7045
    Shellshock

    Shellshock Well-Known Member

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    I believe Matt said he's trying to make decent gains at around 2000-2500 RPM (I'd have to go back and find it for sure). Even a small boost in power in that range would help this truck a lot.

    I'm excite to see what 1.05 brings. If that can get us some more low end performance, then add in a TT setup, this truck could be pretty amazing. We'll see what happens.

    At the rate I'm going, I'm going to have 100,000 miles on mine by the time the turbos are finally available.
     
  6. Aug 9, 2018 at 2:57 PM
    #7046
    Trident904

    Trident904 Freelance Mammographer

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    Even 2000-2500 RPMs is too high for crawling. Would be great on the highway though.
     
  7. Aug 9, 2018 at 4:24 PM
    #7047
    iexc

    iexc Opponent of DFCO a REVHANG

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    Decent gains at around 2000-2500 RPM !!
    Sounds like full OTTO :yes:
     
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  8. Aug 9, 2018 at 5:35 PM
    #7048
    MOC221_

    MOC221_ Well-Known Member

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    Man, you ain't letting go of that bone.. are you?

    ;)
     
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  9. Aug 9, 2018 at 7:02 PM
    #7049
    Halibut

    Halibut Active Member

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    Damn man, a lot has changed since your supra in the 90s! :rofl: a lot has changed since my turbo experience ten years ago too.

    Drive any twin turbo, and you'll realize all the points you made are now moot. Ecoboosted f150 would be a great example. Full boost from 1500rpm all the way up. It adds power anytime the engine is under load. No waiting to spool, almost no noticeable lag.

    One turbo spools up early, and helps the other spool for high rpm. Some have variable vane turbos that achieve the same thing. Twin turbos would be God damn amazing for everything
     
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  10. Aug 9, 2018 at 8:00 PM
    #7050
    Trident904

    Trident904 Freelance Mammographer

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    Had my Supra up until a couple years ago. Spent thousands upon thousands of dollars to get low end boost and still wasn’t able to build significant boost until around 3k. I happen to drive a very built twin turbo’d quite often so I am very in touch with modern turbo systems since I happen to drive this when I don’t feel like driving my truck. Even my V10 R8 bone stock doesn’t get boosty until 3k on the tach, granted 3k happens really fucking fast but still.
    80D3E59C-ADE3-4460-BEDE-466A1169C111.jpg

    We have an eco boost F150 at work and it’s designed to build low end boost for towing. Aftermarket turbo systems are designed for making power but unfortunately on a motor that wasn’t designed with a turbo in mind is going to take a ton of cash and time to get it where you want it.

    I was in the drag car game for a long time both amateur and professionally and still work for an NHRA team as the owners pilot.

    Putting turbos on a crawler is the absolute dumbest thing anyone could do. Low RPM boost production is really hard on a turbo and for crawling purposes, it’s not practical. I think you are missing the point. Turbos are designed for building power throughout the power band and beyond during the increase in engine RPM. Maintaining boost at 1500 RPM’s while crawling would be extremely difficult and not produce enough boost to do anything because RPMs and speed are not increasing. Turbos are not designed for low rpm steady state use. You will get the initial spool up but once the RPMs settle and become constant, the turbo becomes ineffective since it requires increasing flow to produce boost. Ever listened to a turbo once RPMs become steady state? The whistle stops and boost declines.
     
    Last edited: Aug 9, 2018
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  11. Aug 9, 2018 at 8:42 PM
    #7051
    Halibut

    Halibut Active Member

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    Trident, what an awesome response! Well you know your shit, but also concede a well designed system a la f150 is good for low rpm torque for towing. So what is that other than low rpm high load? It doesn't matter if flow is increasing or steady if the a/r is right for that flow. How about large ship engines, 2 stroke or 4, that are blown at a constant pressure? Many live at a constant rpm and change speed and even direction by adjusting pitch on the prop.

    As far as being an aftermarket system, I really am not up to snuff on the similarities but I believe our engine is close to the ls500? And if so we may be using a very similar setup, so close to oem.

    Obviously as you come off load, you lose boost. Doesn't mean it can't come back on when you crack the throttle, if it is well designed. I would say you could use more power to get going with large wheels/tires, armor, rock crawling.. if you wanted it why the hell not?

    Sure would be fine for flying down fire roads, grunting up a hill, towing, etc.
     
  12. Aug 9, 2018 at 8:57 PM
    #7052
    Trident904

    Trident904 Freelance Mammographer

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    I see your point and understand where you are coming from, I just don’t think that a practical and affordable solution can be attained for the normal Tacoma driver that wants a turbo. I was over $90k into my Supra in 2013 when I last rebuilt the motor and added twin 85mm inline garretts. Ended up with 1180 rwhp at 8k on the tach but was only at 310 rwhp at 3k. No amount of dyno tuning could fix it. Got rid of the residual lag from the true dual set up, but even with one turbo feeding the other there wasn’t enough flow to create the low end boost I needed to be a monster on the track. Don’t get me wrong, that bitch was quick and would lift the front end, but I just couldn’t build enough boost to get out in front and stay in front for the full 1/4 mile. Tons of top end and the big motor big wheel guys didn’t have it so I was constantly having to run them down. Didn’t matter if I tree’d them or not, they would eat my ass at the 60 foot and get out a good car length on me.
     
  13. Aug 9, 2018 at 9:36 PM
    #7053
    iPaint

    iPaint Well-Known Member

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    I miss being in the MT group. :(

    Saying that turbos, in general, are not designed for for low rpm steady state boost is incorrect. You even provided the Ford Ecoboost example of this. Nearly every diesel turbo engine ever made would be another good example. All the turbo understands is flow, it doesn’t know what rpm an engine is at or it’s displacement. If you had smaller turbos and were making 400hp at 6000rpm you could get them to light up much, much faster.
    If Mat is trying to get 1200rwhp and 8000rpm with his turbo kit from a 3.5L engine it wouldn’t have low rpm boost either. That would not be an ideal setup for a truck. A 1/4 mile drag car and a pickup should not have comparable setups, N/A or turbo.

    If this upcoming Tacoma turbo kit doesn’t see noticeable boost by 2000 rpm or so, I don’t think there will be as much interest. What this motor seriously lacks is low rpm power.
     
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  14. Aug 9, 2018 at 9:38 PM
    #7054
    Trident904

    Trident904 Freelance Mammographer

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    Gearing gets you low RPM power. These trucks should have come stock with 4.56 gears and there would be no issues.
     
  15. Aug 9, 2018 at 9:44 PM
    #7055
    iPaint

    iPaint Well-Known Member

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    I agree with the gearing problem. There would more available torque, but it’s not because the engine itself is producing it at a lower rpm.
     
  16. Aug 9, 2018 at 11:33 PM
    #7056
    Halibut

    Halibut Active Member

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    Good post. It isn't actually the air mass flow being pushed out of the cylinder that really drives the turbo, or else it would have to wastegate like crazy all the time. It is the heat from combustion expanding across the hot side impeller that generates the power to compress air. Merely running the turbo with tepid air would not get the same result.

    That is (one of the reasons) why you don't get boost on a turboed vehicle until you open the throttle, even if you are at 4500rpm. As soon as you hit the gas at that rpm, yeah you get boost, right now.

    I would really like to see twins on this truck. Not that I can afford it. Also a little hesitant to turn up a high compression engine, and really especially can't afford to do internals
     
  17. Aug 10, 2018 at 6:25 AM
    #7057
    mZiggy

    mZiggy Well-Known Member

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    In my neck of the desert (El Paso), there's not so much rock crawling and technical trails as there are open spaces where you can haul ass or trails where you'll need to go into 4lo and lock the rear, don't get me wrong, but you're not doing a whole lot of technical wheeling. Mostly steep muddy or deep sandy inclines, stuff like that.

    You can find the more technical trails where rock crawling is prevalent, but you've gotta drive a fair bit to get to them
     
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  18. Aug 10, 2018 at 7:19 AM
    #7058
    elduder

    elduder Well-Known Member

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    Seems foolish to dump 6k+ into a turbo or SC set up with the goal of low RPM crawling torque. I'm not sure anyone would do that though. Money should goto gearing and transfer case. Did anyone specifically say they would turbo for off road use?
     
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  19. Aug 10, 2018 at 7:23 AM
    #7059
    Trident904

    Trident904 Freelance Mammographer

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    There are numerous posts all over TW from former ricers turned wheelers that are drooling over a turbo set up. Granted, most of their hardcore wheeling consists of hardpacked flat dirt and posed pics for tha gram.
     
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  20. Aug 10, 2018 at 7:32 AM
    #7060
    elduder

    elduder Well-Known Member

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    Pretty much me and all the Tacoma guys at my work, lol. At least I have some common sense about how to get torque.
     
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