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$403.95

inTune i3 for GM Platinum - 8245

Suggested retail: $449.00
Your Price: $403.95
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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.


    NOTE: This product will not work on Hybrid or E-Assist vehicles.

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    Questions about buying this product? Our experts are available from 8 AM – 5 PM MT. Call today at 866.404.6141. Our sales team would be happy to answer any questions you have.
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    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 i3 for GM Platinum is rated 4.4 out of 5 by 122.
    Rated 4 out of 5 by from Easy to use. Easy to use. I used it to turn off AFM and Diablo Tune. I can really tell a positive change in power. Had tune for 4 months and reset to stock for a dealer visit. It worked great and was very easy. The only issues I have with it is a bug with disabling AFM. If you set "YES" to disable it does not. You have to set it to "NO" to disable AFM. And the engine pulsates very slight (25-50 rpm or so) on the highway. When I returned to stock for my dealer visit the engine pulsate stopped. It is noticeable but worth having AFM turned off. As of my last update 4/2018 the AFM bug is not addressed yet. When I reinstall the tune in July I will update I3 and see if the bugs have been fixed. George
    Date published: 2018-06-29
    Rated 5 out of 5 by from platinum i3 and the "Diablo" tune this thing kicks butt. a was happy right away but now it has been a few days and 200 miles later. its doing better now than the day I installed it , the "Diablo tune". .....1st gear to 2nd gear would chirp or Bark the tires ( stock or no tune) first day of install it would fish tail 3-4 times when shifting from 1st to 2nd (big and noticeable difference ).....now that it has been 150 miles +(since Diablo tune was installed) when it shifts from 1st to 2nd it doesn't even slow down you can hear it shift but just continues to lay down a tire shredding burnout thru 2nd gear , wow!!! pretty peppy!!!! 2002 formula 95000 miles original stock. automatic.....….
    Date published: 2018-05-24
    Rated 3 out of 5 by from DiabloSport I3 Platinum GM Bought this about a month ago, and was excited when it came in. Purchased this I3 for a Silverado 1500 with a 5.3 and a 6 speed trans. Seems to be a decent tuner, but will throw System too Rich codes without the use of and aftermarket Cold Air Intake. However, I would not recommend using any of the Transmission tunes. After applying the firm shift tune, I noticed the shifting was considerably worse. Restored the backup to the TCM but that did not solve the issue. Luckily I had access to a GM Tech2 at my Chevrolet Store, and after re-flashing with the factory setting everything was back to normal. I now only use it to tune the ECM and read any codes that might come up.
    Date published: 2017-10-23
    Rated 5 out of 5 by from Awesome Device ! awesome product ! very happy with it. 2015 silverado 5.3L - updated my device and installed the Performance/Diablo Tune, adjusted for 33" tires, turned OFF dod/afm ( 4 cylinder mode ). truck runs and drives wayyyyyyy better now ! i highly recommend this device to anyone and everyone, totally worth the price, would have bought it sooner if i knew if would make the truck drive so much better ! planning on a custom diabLEW tune asap. ( currently have k&n intake and flow master cat back exhaust )
    Date published: 2019-08-22
    Rated 4 out of 5 by from Good tuner. I received the i3 in perfect condition. No problems tuning my truck (2007 Silverado 1500 5.3L). Have tried several of the tunes and have tweaked the parameters to my liking. Main reason I purchased the inTune was to rid myself of the nuisance known as AFM, which was easy enough to do. My only complaint, so far, is that I won't scan my other truck's DTC's. The inTune is supposed to be able to scan any vehicle (even if it's not 'married' to said vehicle) but will not scan my 2004 Silverado 2500 HD 6.6L. It just sticks on the "Please Wait" screen.
    Date published: 2017-11-09
    Rated 3 out of 5 by from Capable tool, but lacks user options I bought this thinking I could make several adjustments to the engine and transmission control units. While the unit is capable of this, it requires the use of special software that only "dealers" have access to. For the money, I expected a little more end user control. This, however, seems to be the unfortunate trend in the vehicle tuning market. I was able to turn off the engines active fuel management (displacement on demand), which is worth every penny I spent on the unit so I have no regrets. Physically, it feels cheap and is much smaller than I anticipated. The display quality is sub-par. In the future, I will probably go with an open-source tuning platform. If you're not knowledgeable in the world of engine tuning or just need to make basic changes, this is probably the best way to go. Advanced users should look elsewhere.
    Date published: 2017-12-07
    Rated 5 out of 5 by from Buy it. ‘08 GMC Sierra, 5.3… All stock. I should have done this years ago. I got a mild improvement in horsepower and torque, but the truck is so much more drivable than it was. Most of the delayed throttle response is gone, quicker in town, and so much better on the freeway. I didn’t buy the Diablo to improve gas mileage, I just wanted the truck to perform better, and it does. I was really surprised that my gas mileage improved… Even with my foot really into it, I got another two mpg. Turn of the AFM; it’s horrible. It was doing me absolutely no favors. I was anxious about it, but the install was super simple. About 10 minutes effort to make the truck worth keeping.
    Date published: 2019-10-27
    Rated 5 out of 5 by from Amazing!! I was getting 22mpg with my 2016 Colorado 3.6V6 when I bought it. Not bad in the Oklahoma wind. Then I put a 6” lift and 33” tires on it and it went to 17mpg and power was pathetic. The main reason I got the i3 tuner was diagnostic and speedo calibration. Figured let’s go ahead and download the 87 octane tune with firm trans shift while reprogramming speedo. Only been 3 weeks and up to 20.7 mpg and runs better than did before lift. Throttle response is amazing. Power is back if not better. Larger tires always lug an engine but it runs so much better than stock with factory tires ever did. The firm trans shift is amazing. Factory trans program felt lazy and unresponsive never sure what gear it wanted. I loved my truck before lift and tires. Then I installed lift and tires and thought man did I screw up. This little Chevy ain’t happy now. Now that I’ve installed the tune I love my truck again and it begs to be driven hard. Excellent job Diablosport!
    Date published: 2017-10-20
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    Will this work on my 2019 chevy Colorado 3.6l ? I want to disable the afm

    Asked by: Mike 0208
    Yes this does support the 19 colorado 3.6. I just got mine last week. The difference in performance and drivability is amazing.
    Answered by: Carver
    Date published: 2020-11-19

    I have a 2013 Silverado 1500 5.3 will this work on it and will this work with E85

    Asked by: Hodgie6977
    We do support that vehicle and if you have a flex-fuel capable vehicle then it will work there too.
    Answered by: Marketing MB
    Date published: 2020-11-23

    Will this product work for my 2004 Silverado 1500 5.3L? Will it help improve towing? 

    Asked by: Z_Seventy_1
    Yes it will work and it will improve towing.
    Answered by: Marketing MB
    Date published: 2020-10-13

    What kind of benefits can I expect to get from a 2001 suburban with a 5.3?

    Asked by: Super_Dad
    Here you go! Performance/Diablo Tune 20HP 25TQ 87 Octane Performance Tune: 13HP 18TQ Touch Screen - Y Data Logging - Y Check Clear DTCs - Y 5 Volt Data Logging Inputs - Y Accepts Custom Tunes from CMR - Y Calibrate Speedometer for Gear Ratio - Y Calibrate Speedo for Tire Size - Y Cooling Fan Control - Y Fuel Rich/Lean Adjustment - Y Spark Timing Advance/Ret - Y Idle RPM - Y Top Speed Limiter - Y Rev Limiter - Y Shift Points - Y Shift Firmness - Y
    Answered by: Marketing MB
    Date published: 2020-12-17

    Will this delete the downstream o2 sensor?

    Asked by: coddle84
    We do not have any options for emissions delete tuning, unfortunately.
    Answered by: Marketing MB
    Date published: 2020-09-22

    Will this work for a 2500hd with the 6.0 and a 2010 1500 with the 5.3

    Asked by: Frankie1
    Yes. You would have to buy an additional vehicle license in order to tune both of them at the same time.
    Answered by: Marketing MB
    Date published: 2020-09-15

    Does this device have to remain permanently installed in the vehicle for the tuning to work, or is it programming the on board computers in the vehicle with permanent programming?

    Asked by: Basspig
    Once you program the vehicle into a power level, you can remove the tuner from the vehicle and the performance tune will remain.
    Answered by: Marketing MB
    Date published: 2020-09-15

    I have a 2020 chevy silverado 1500 Trail Boss. 5.3 V8 I have searched with the filters set and I don't get any options. Will this unit work with my truck? If not, is there an option? Thanks in advance

    Asked by: Jgunzzz
    Unfortunately, we don't support this vehicle with tuning yet. But we are getting close to releasing some solutions here.
    Answered by: Marketing MB
    Date published: 2020-09-15
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