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inTune i3 for GM - 8200

Suggested retail: $422.95
Your Price: $379.95
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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!


Note: This product is 50-state emissions compliant. This product does not include CMR custom tuning capabilities. Please see PN 8245 for GM CMR custom tuning capabilities.


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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inTune i3 for GM is rated 4.0 out of 5 by 31.
Rated 2 out of 5 by from Poor Quality i have a 2017 chevy silverado 5.3 6 speed trans I have had nothing but problems with this device when i first got it it was frozen on the screen, called tech support 4 times took the 4th time for someone to actually help me and get it unfrozen the second time i called a guy hung up on me. now my problem is whenever i click on the dod/afm on/off it just freezes the whole device so now i cant turn off AFM which was the whole reason i got the device. i have had a lot of different tuning devices on multiple vehicles and never had this problem. Other then that the tune is slightly better then stock. And does offer a Scan tool built in which is pretty nice
Date published: 2017-11-20
Rated 1 out of 5 by from No difference. Had it installed for 2 weeks on my 06 GTO 6.0L and felt no difference at all. Only change is I went from 19 mpg to 12 mpg with no change in driving habits or conditions. Removed the tune and it runs better. There is no way to customize the tune yourself besides changing the idle and a couple small things. I have full exhaust from long tube headers back with an aftermarket intake and hoped for a huge difference like Cobb does. But, no. It plugs in and uploads and adds gobbs of timing. That’s it. You can data log and send that to a custom tuner if you wanna pay More money for that. I’m currently selling mine and going to get a real dyno tune for real results. Don’t waste your money.
Date published: 2017-12-07
Rated 5 out of 5 by from Simply the best I got this a couple weeks ago and it was amazing after doing the tunei felt more torque and hp from my car the shifts were alot firmer than ever super super awesomr i tuned my 5th gen chevy camaro its fast at tuning less than a minute per tune
Date published: 2017-11-07
Rated 5 out of 5 by from Intune i3 for GM Bought to delete AFM / DOD on ‘09 Tahoe, ended up putting the 87 octane tune with firm shift....really helped it out...much more fun to drive and definitely helped the lame shifting 6 speed...like a different vehicle now. Added a license for my Suburban, technical support was great on that part. Very pleased with this tuner!
Date published: 2017-10-20
Rated 5 out of 5 by from Excellent product Bought for new 2014 5.3l makes very drivable and better fuel economy thanks
Date published: 2017-11-06
Rated 5 out of 5 by from Great tuner Bought this for a little more power and mainly better furl mileage after adding 37s. Went from 9 back to 12 mpg and gained some low end torque. Pretty pleased with the canned tune. Havent tried running the diablo tune yet i always run 87
Date published: 2017-10-17
Rated 5 out of 5 by from easy to use I installed the 87 octane tune in my truck, a noticeable difference in the performance. Go a 2.5 mile per gallon increase in fuel mileage.
Date published: 2017-10-26
Rated 5 out of 5 by from Sport tuning made easy Been wanting a ca legal option for tuning for both our 07 Suburban and 02 Corvette. After working with tech support to get the updates to firmware I was good to go. Suburban idles better, shirts set to firm, disabled AFM, calibrated speedo to correct rim and tire size, went with Diablo tune power and torque is improved and mpg is up also. Real world improvements on our daily drivers, that keep them streetable and legal, with an edge up on above factory performance. Will be getting the license for the corvette next
Date published: 2018-06-19
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Will this tuner calibrate the trans on a 15 chevy 1500 with 6.2l and 8 speed trans to fix the sluggish shifts and clunking they are known for?

Asked by: highcountryhunter
Yes, we do enhance the shift points and shift firmness. For the best price available, give us a call at the number below. 866-404-6141 DIAL 5
Answered by: Moises
Date published: 2019-04-15

How will this do for a 2017 Sierra 4.3 (Leveled with mud tires)? Just looking for some details on the performance if I were to do this.

Asked by: Chris123
You would actually need the 8246 kit for that vehicle. It will work great and the features for your vehicle are listed below. Performance/Diablo Tune 10HP 14TQ 87 Octane Performance Tune: 5HP 8TQ Economy 5HP 8TQ Mileage Booster Tune 2mpg 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 Torque Management Adjustment - Y Disable Active Fuel Management - Y
Answered by: Marketing MB
Date published: 2019-04-09

Any real world before and after Dyno results for 99 Silverado 5.3 and will this work on that year?

Asked by: Kman953
Hello, the inTune i3 will add 20HP & 25TQ to the wheels and yes the inTune i3 will work on your 1999 Silverado 5.3L. For the best price available, give us a call at the number below. 866-404-6141 DIAL 5
Answered by: Moises
Date published: 2019-03-04

Will this work on a 1999 GMC K2500 7.4L suburban 

Asked by: Hank97
Unfortunately, we don't carry a tool for your 1999 GMC K2500 7.4L suburban
Answered by: Moises
Date published: 2019-02-12

Will this work on a 2005 buick Rainier 5.3?

Asked by: Bogie
The only product available for your 2005 Buick Rainier 5.3L is the Sprint, and Marathon active fuel management module. For more info and the best price available, give us a call at the number below. 866-404-6141 DIAL 5
Answered by: Moises
Date published: 2019-02-07

Can this remove the factory speed limiter  on my 2012 silverado?

Asked by: Matt6612
yes. I just used it to disable the AFM/DOD, remove speed limiter, change tire size, firm up auto shift and 87 octane tune after install of a CAI and catback exhaust.
Answered by: vcbbref
Date published: 2018-12-24

Will this one remove the top speed limiter?

Asked by: Pat78
Yes, the tool can turn off the speed governor on all vehicles that it supports.
Answered by: Mike M
Date published: 2018-09-02

Can this tuner adjust for tire size like the predator 2 and trinity 2 programmers? I assume the answer is yes, but I didn't see it in the product description.

Asked by: Alex83188
Yes, it has the exact same parameters for GM vehicles as the P2 and T2.
Answered by: Mike M
Date published: 2018-07-05
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