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inTune i3 for GM Platinum - 8245

Suggested retail: $421.95
Your Price: $379.95
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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.

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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.
inTune i3 for GM Platinum is rated 4.3 out of 5 by 26.
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 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 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 ) 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 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 Noticeable Difference! I bought this to get a little better performance and for larger tires I have purchased for my 2015 Chevy Silverado Z71. Before putting the larger tires on I programmed my truck with just the 87 Octane performace mode, firm shifting, and speed limiter off and noticed a great difference right away! Better up-shifting and down-shifting through gears, better throttle response, and higher RPMs when I need it. I've been lighting up the tires that I'm about to get rid of! Will soon test the larger tire speedometer calibration!
Date published: 2017-10-12
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 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
Rated 1 out of 5 by from not good I purchased this product, install in in my truck about 2 months ago, it been a disaster from the very beginning, lighting up all lights on dash board when you push the engine, 2 days ago I step on the accelerator, passing a trailer on the road, it responded in the beginning, once I let go of it it misfire twice and noe every time,the engine switches from V8 to V4 makes a click and I hear knocking on my engine, I'm worried about it, I need to contact this company and ask what is wrong with it, is it going to ruin my engine, what to do, I should never buy this product, do not buy it is not worth it!!!
Date published: 2018-07-04
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I have a 2008 Pontiac Solstice GXP. It's not listed in the i3 tune list but other 2.0 turbos are listed?????

Asked by: Dennis
The computer calbrations are still different from one model to the next and we do not currently cover that platform.
Answered by: Mike M
Date published: 2018-07-19

I have a 2001 Sierra 1500 with the 5.3l. Will this tuner work on my truck and what different tunes does it come pre-loaded with?

Asked by: Tristen75
Your vehicle is supported, and it will contain these preloaded tunes along with a healthy list of adjustable parameters Performance/Diablo Tune 20HP 25TQ 87 Octane Performance Tune: 13HP 18TQ
Answered by: Mike M
Date published: 2018-08-30

I have a 17 Camaro SS. I loaded a tune using the i3 and somehow the MyLink display stopped working. No stereo, navigation, backup camera, etc. Has this happened before and is there a fix?

Asked by: STATRA
Auxiliary systems get turned off during the read and write process to maintain communication with the vehicle's PCM. In most cases you can fix it by disconnecting both battery cables, wait about 5 minutes and touch them to each other momentarily before reconnecting.
Answered by: Mike M
Date published: 2018-06-20

I have a 5.3 2003 Silverado and was wondering if this will work with my truck

Asked by: James99
Yes, that device supports your vehicle with both engine and transmission control.
Answered by: Mike M
Date published: 2018-06-15

Hello, Do you have a product which is possible of Speed Limiter for the 2017 Chevrolet express 4500 cutaway 6.0L ?

Asked by: Baemin21
Yes, you can lower the speed governor with the I3 8245.
Answered by: Mike M
Date published: 2018-06-13

Can i tune out my egr in a 2001 6L LS truck? 

Asked by: Tim87
Yes, but it will require a custom tune from one of our GM CMR dealers in addition to the tool itself. You can find CMR dealers who have our custom tuning software under the Dealers heading of our site, or with a little searching online.
Answered by: Mike M
Date published: 2018-06-11

I have a '13 ss camaro. Do you have a tune for 1-7/8 headers and a cold air intake? Will your tune turn of the o2 sensor check engine light?

Asked by: 7sins17
Because of the longtubes and deleted cates, you will need a custom tune to properly calibrate the vehicle for them. Custom tunes are sold by our GM CMR dealers, and can be looked up by zip code on our site’s “Dealers” link, or with a little searching online.
Answered by: Mike M
Date published: 2018-06-11

got a 8245 i3 platinum tuner. Tried to tune my 2018 Corvette Grandsport. I get an error msg saying “ there are control units in this vehicle that are currently unsurpported but can be Read. Then it asked me to send the unknown backup file to diablo tech. 

Asked by: Dave2018GS
Diablo tech fixed my situation and now the tune works great. Thank you! 
Answered by: Dave2018GS
Date published: 2018-06-03
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