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$457.95

inTune 3 Platinum for 17+ GM Vehicles - 8246

Suggested retail: $509.00
Your Price: $457.95
  • Due to growing demand and increased order activity, please allow for 1 to 2 additional days for online shipments.

    In Stock. Orders placed by 2 PM MT, with the exception of weekends and holidays, will ship the same business day. Please allow 48-72 hrs for 2015+ Chrysler PKIT and PCM products. Want to Buy Now and Pay Later? Click Add To Cart and see how you can spread your payment over 3, 6, or 12 months with Affirm

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    Saves factory setting and returns easily to stock

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    Orders placed by 2 PM MT, with the exception of weekends and holidays, will ship the same business day


    If you are a horsepower junky and you need a fix, look no further. Whether you have a Chrysler, Ford, or GM vehicle in your driveway, DiabloSport's inTune i3 Performance Programmer is an easy way to boost power without even popping the hood! You get a performance upgrade that makes your throttle more responsive, optimizes drivability, and even adds some bottom-end horsepower! The inTune i3 programmer is pre-loaded with dyno-tested performance programs designed specifically for your car or truck. Within minutes, you could add horsepower and torque with no other tools required!


    WARNING: This product is not street legal and may only be used on Racing Vehicles. Racing Vehicles must be used exclusively for racing or other forms of competition. Racing vehicles must not be registered and must never be used on the street. It is illegal to install this product on a registered vehicle and use it on the street.


    Not available for sale or use on pollution controlled vehicles in the state of California.

    You must configure your vehicle to view Product Features

    This part is legal for sale or use on Racing Use Only Vehicles
    The following vehicles are considered Racing Use Only Vehicles:

    • Racing Use Only Vehicles are vehicles that are used exclusively for competition that aren't registered and that may never be used on the street
    WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

    inTune 3 Platinum for 17+ GM Vehicles is rated 4.1 out of 5 by 17.
    Rated 5 out of 5 by from 2017 Silverado 5.3 wake up I was really not happy with the performance of my Chevy. I drive 60 miles a day too work and back. Country roads and I-10 traffic.I was at the point were I was considered buying a Ford150. I know I know. I installed the Diablo around 3 weeks ago. MAN I tell you WOW this thing really woke up. It was really easy to install. Just make sure that it is updated first. If you plan on installing over the weekend. When you get it in take the time to hook it up to your PC for updates. Super easy!!!! Now with this installed I’m getting better performance and gas mileage then I was in my 05. With the tune I’m still averaging 18 mpg before it was 19 -20mpg a small loss that I can live with. And that’s with canceling the AFM cylinder drop. Now I have a V-8 again. I did the 93 tune on mine. It does however come with multiple tunes on it to suit different needs. Check it out on you tube. I highly recommend getting this product.
    Date published: 2019-10-23
    Rated 5 out of 5 by from Great tuner A Must Have for your 18 silverado I just received this Saturday. and wow what a difference this product has made in my 2018 Silverado 1500 4WD with dual 3 Inch exhaust conversion an Quad cab truck, first I tried the 87 octane tune and Immediately felt a difference in the power of my truck , so yesterday I tried the 91 octane tune, AFM off, Speed limiter off, Hard shift on trans, 25 percent throttle adjust Wow is all I can say!! this really woke up my already quick truck. Now when I step on it you can really hear the throttle body open up and my truck just roars, Had some jerk in a F250 yesterday trying to get a race out of me So I stepped on it in seconds he was eating my dust! If you are looking for a new tuner for your Silverado look no further this is the one to buy
    Date published: 2020-05-18
    Rated 3 out of 5 by from Tuning made easy I bought this tuner a month ago and it was not working out of the box. I downloaded the update before use, and it needed some kind of vehicle unlock installed. I was able to get it right the next day, it sucks that tech support doesn’t have evening hours, I had to wait until the next day after they opened, so I took off work to get it done. but, I’m very pleased with the tuner now. Very easy to use
    Date published: 2019-08-21
    Rated 4 out of 5 by from Happy So Far I bought this about a month ago, and so far I'm happy with it. It's not perfect, but it works as advertised. A few complaints I have is how cheaply made the device seems and the instructions provided seem a little lacking. Upon initially tuning my truck I kept receiving a message such as "the ECM on the vehicle has detected updates are needed before tuning", but I had already checked for and uploaded current updates prior to tuning. I finally figured out after about 30 minutes of messing with it that I needed to move my truck closer to my router to receive a better connection over my WiFi, and all of sudden I had it tuned within a couple of minutes. Other than what I mentioned above, I'm am very pleased with how my truck runs with AFM/DoD disabled(still gets 18-20 MPG) and the throttle boost set to 10% on the 87 octane tune and stock TCM tune. I bought the platinum for the custom tuning capability and plan in the near future to have Diablew send me a custom tune after I do some data logging. Lastly I'd like to add that the price doesn't seem too bad when you think of what all it does. It has the capability of a code reader, a Pedal Commander, a standalone AFM/DoD disabler. Plus it has pre-loaded tunes, custom tuning capability, data logging, tire/gear editing, and the capability of tuning other supported makes/models of vehicles for a licensing fee.
    Date published: 2019-03-03
    Rated 5 out of 5 by from Woke up the my Z Definitely has a little more low end torque especially with npp in closed position. No more 4 cylinder mode which caused motor and transmission issues eventually. One Disappointment is it had no tranny shift option where I read that it did.
    Date published: 2020-01-02
    Rated 4 out of 5 by from Great little tuner I've only had it a few weeks but so far I like it. Only made a few adjustments. I used the 93 octane tune, disabled the Advance fuel management, turned up the throttle sensitivity to 10. I was disappointed that I couldn't adjust transmission shift points and firmness.
    Date published: 2019-09-30
    Rated 5 out of 5 by from Great Works great a little confusing at first bust once you update and play with it for a bit you can do a lot with it
    Date published: 2020-03-25
    Rated 5 out of 5 by from It works! I ordered from Amazon and it wouldn’t connect to my truck or update. Returned and ordered from Diablo and it worked perfectly!
    Date published: 2020-01-02
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    I have a 2017 Chevy Silverado 5.3 4x4. Ive been considering buying this product to help with the hard downshifting that seem to be a really common problem with these 6 speed transmissions. Ive read on GM forums this could be a fix, any truth to this?

    Asked by: Helphelphelp
    If you have issues with second gear maybe CAGS related which is forcing you avoid second gear at low RPM or downshift.  Try activating the CAGS toggle on the tuner and see if corrects your situation.  
    Answered by: rsilb
    Date published: 2020-12-07

    I see throttle response add-ons such as (Pedal Commander). Will this do the same thing?

    Asked by: Greatbasinff
    The Pedal Commander can only adjust throttle response, however, the tuning in the inTune does much more. The throttle adjustment is only one portion of what we do in our tuning process.
    Answered by: Marketing MB
    Date published: 2020-10-23

    2020 Yukon SLT 5.3L, Will adding the programmer to my new vehicle void the GM warranty?

    Asked by: Junglejim
    Tuning doesn't inherently void your warranty, however, it does open up some risk. I would just make sure you program your vehicle to stock and remove the tuner before going in for service or updates as that will virtually eliminate your risk.
    Answered by: Marketing MB
    Date published: 2020-10-23

    i purchased the 8246 tuner for my 2017 silverado 5.3L. Tried installing tune, said my ecm needed to be updated. tried updating tuner with my computer, got to 77% and froze,stayed there for 5 hours. unplugged tuner because i had to leave. what do I do now?

    Asked by: jtcole
    I would attempt the update again after unplugging and reopening the software. If the issue persists, give us a call at 866-404-6141.
    Answered by: Marketing MB
    Date published: 2020-10-12

    Will the 8246 work on my 18 Chevy Tahoe RST 6.2L 10 speed?

    Asked by: Tahoe868
    Yes it will.
    Answered by: Marketing MB
    Date published: 2020-09-29

    I have the i3 tuner. How do I run the 93 octane tune and disable AFM ?

    Asked by: Ek80
    That tune is available in the tuning menu, it may be called the "Diablo" tune. The AFM is an option in the advanced tuning menu.
    Answered by: Marketing MB
    Date published: 2020-09-22

    I have the 8246 to Tune my 2018 Sierra. I also want to Tune a 2013 Silverado. Will this tuner store both original stock tunes? If not, how can I store both tunes so I can go back to stock if needed.

    Asked by: MarkB
    If you buy an additional vehicle license, you will have the ability to tune two vehicles at the same time. In that situation, the tuner would save the stock files of both vehicles so you can tune them independently.
    Answered by: Marketing MB
    Date published: 2020-11-18

    I purchased my i3 8246 from a third party seller and, when I unboxed it, I noticed that the OBD cable was integral and not separate like I see in the product photos. Is this correct, or did this third party seller sell me a knock-off?

    Asked by: Ebinuchanged
    That just means it is new. Our newest version features a hard-wired cable. We need to update some of our web photos.
    Answered by: Marketing MB
    Date published: 2020-08-28
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