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$443.95

inTune 3 Platinum for 17+ GM Vehicles - 8246

Suggested retail: $493.95
Your Price: $443.95
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    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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    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 13.
    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 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 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 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 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 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 2018 Chevy 1500 4x4 with the 6.2lt. When I try to tune my truck with the I3 it tells me I have one or more ECU and I need to pug it in to my pc. What’s up with this ?

    Asked by: James8055
    Your product likely needs an update. Please attempt to update the device with the Update Agent software.
    Answered by: Marketing MB
    Date published: 2020-05-27

    how do i install this on my 2017 chevy 2500 6.0?

    Asked by: Ncanning1317
    Please give our tech support a call at 866-404-6141 or email at tech@diablosport.com.
    Answered by: Marketing MB
    Date published: 2020-05-27

    Will the i3 platinum tune my 2007 silverado 2500hd classic 6.0l?

    Asked by: Jb89
    Yes it does support that vehicle.
    Answered by: Marketing MB
    Date published: 2020-05-21

    2018 Silverado 1500 LT 5.3L 6 speed auto, 4wd DiabloSport 8245 inTune i3 Platinum Performance Programmer 3rd Generation inTune Just purchased this yesterday, will I have to buy the 40.00 unlock code with this programmer?

    Asked by: Dvaneck
    Yes. The only difference in the 8245 and the 8246 is the $40 unlock process for the 2017+ vehicles.
    Answered by: Marketing MB
    Date published: 2020-05-18

    Will this work in my 2019 Silverado LD

    Asked by: Rmcleod15
    Yes, this should work for you on that vehicle.
    Answered by: Marketing MB
    Date published: 2020-05-05

    I have a 2018 Silverado with 33" tires. I heard if you adjust the tire size on the tune your cruise control will no longer work? Is that true?

    Asked by: Devin D
    Yes, you are correct that tire size modifications can cause an issue like that. However, we can build custom tunes to account for that and our tech teams can do that for you. 866-404-6141
    Answered by: Marketing MB
    Date published: 2020-04-22

    I have a 2019 GMC Sierra Denali 6.2 10 speed. Will this work, and if its in the works whats the estimated completion?

    Asked by: dsantiago07
    In the works stay tuned!
    Answered by: Moises
    Date published: 2020-03-13

    Will this work on a 2020 tahoe 5.3L? Website says it will but a rep told me it would not.

    Asked by: madisonboy13
    Yes DiabloSport Tuning is now Supporting 2020 Tahoe, Suburban, Yukon, Yukon XL 5.3L Tuning For the best price available, give us a call at the number below. 866-404-6141 DIAL 5
    Answered by: Moises
    Date published: 2020-01-16

    Have a 2019 GMC 2500HD 6.0 Looking for a tune to aid in "Towing" a travel trailer. Is this for me?

    Asked by: ChuckP
    With the 2019 models give us a call at the number below to confirm compatibility. 866-404-6141 Dial 5
    Answered by: Moises
    Date published: 2019-12-17

    Will this programmer work for my 2019 Silverado new body style 5.3l 8speed with dfm?

    Asked by: Sam0177
    New body style tuning is in the works. Stay tuned!
    Answered by: Moises
    Date published: 2019-12-03

    My 2019 Tahoe has push button start, all the videos I see on Youtube says "ok now turn the key", is safe to assume that the instructions take into account the push button start?

    Asked by: pnwdog
    That is correct, we do support push-button vehicles. For more information and the best price available, give us a call at the number below. 866-404-6141 DIAL 5
    Answered by: Moises
    Date published: 2019-11-04

    can you activate E85 tune? on 2018 Camaro SS

    Asked by: OBI1
    If the vehicle is a Flex configuration from the factory, the preloaded tunes will work as-is. If it came originally as gasoline only it can be tuned for E85 with a custom calibrated file from one of our CMR Dealers that have our software to do so.
    Answered by: Moises
    Date published: 2019-10-31

    When will you be releasing a tuner for a 2020 Suburban RST 6.2 10 speed auto?

    Asked by: Kevin R
    We don't have a definitive timeline on that support as those computers are more difficult to tune as compared to the 5.3L equipped models that we just announced support for. Stay tuned for more updates.
    Answered by: Marketing MB
    Date published: 2019-10-30

    Can I use my buddy's INTUNE 3 on my truck?

    Asked by: CS1731
    As long as both of you are using the same make of vehicles IE: GM/GMC or Ford....etc....Keep in mind that if you ever want to return your truck back to stock before you take it to the dealer then you will need to get it from him. BTW I always suggest restoring to stock before you take it to the dealer not because the dealer may see the tune but because they will most like write over it wiping out your tune. By doing so you will also reduce the chance of the license not working on your truck if they update the ECM and for some reason the Diablo i3 does not recognize your ECM.
    Answered by: azsteve01
    Date published: 2019-08-27

    I have a 17 Silverado 5.3 and my wife has a17 Tahoe 5.3 . Will I be able to tune both with just one tuner /liscense . ? If so will both stick tunes be saved? 

    Asked by: Nick15
    You will need an additional license for the 2nd vehicle and yes the stock tunes for each vehicle will be saved before the changes are applied.
    Answered by: azsteve01
    Date published: 2020-03-10

    Am i able to disable the cylinder disable and have all cyls running all the time with the i3?

    Asked by: Gare
    Yes, there is an option to disable the Active Fuel Management/Displacement on Demand (AFM/DoD) so all cylinders are active all the time. On the dash where it shows V8 and sometime V4 it will stay on at V8
    Answered by: azsteve01
    Date published: 2019-10-11

    On my 2019 corvette I had to purchase the ECM unlock tune , can the dealership detect that if I return to stock

    Asked by: Suprnot
    The real answer is sorta. The dealer cannot see what parameters that you had changed whether you left the tune on or restored back to stock. Unless you get a tech who has the time to go thru settings and knows them well enough to know it is not stock. So the answer to that is not likely. What they can see is how many times the ECM is programmed. So each time you apply the tune or restore the tune the ECM keeps running tabs. Again unless they are paying attention and want to try to bust you or give you a hard time they probably won't notice.
    Answered by: azsteve01
    Date published: 2019-12-18

    Will it program shift points/harshness in auto trans (2018 Camaro SS)?

    Asked by: Kenny D
    Yes, we do revise the shift points and firmness. For the best price available, give us a call at the number below. 866-404-6141 DIAL 5
    Answered by: Moises
    Date published: 2019-03-28

    I have a 2018 GMC sierra 5.3 can I use it to turn the transmission shift points in Firmness ? 

    Asked by: Chris d

    2018 5.3 with 8 speed transmission. Is there options to change anything on the transmission?

    Asked by: 18Sliverado

    Will this work on a 2019 Camaro SS with 10 speed and Active Exhaust?

    Asked by: JoeE

    Do you plan to support the 4.3 in the 2019 Silverado Trailboss?

    Asked by: Mav0522

    will this work on 2019 Silverado LT

    Asked by: jonp

    Will this work on a 2019 Silverado old body? 5.3

    Asked by: 4x4Silver

    So the 8246 is what I need for my 2018 Silverado 5.3? 

    Asked by: Eddie23

    When will you be able to custom tune adjust 2017 GM pickup trucks eight-speed automatics?

    Asked by: Silveradohighcountry

    I just bought a intune3 for my 2018 sierra 6.2l and it says I need to update the ECU when I try to upload the tune. How do I do that? I had a intune 1 for my 2002 silverado and it was just a click on the tune I want and load it.

    Asked by: Zrgx19

    can you tune more then one vehicle at a time

    Asked by: sdoyds
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