DiabloSport 8200 inTune i3

Worked perfect! Deleted AFM, changed tire size and did an 87 octane tune. 15 sierra.

I love it, removes speed limiter, afm, and i can feel the difference in acceleration on my 2015 gmc sierea 1500 5.3l. I've used diablosport since owning my 2003 chevy Silverado 2400hd. Easy to use and just a great overall product

Slowest device

If you're on the fence about this product just do it! I have a 2004 dodge ram 1500 5.7 hemi. Before loading the Diablo 91 octane tune my truck had slow sloppy shifting and throttle response was so slow. At cruising speed I had to nearly floor the pedal to get it to down shift and it just felt bogged down. Now with the Diablo tune the response is instant!! It's almost scary. My truck has alway had good traction on dry and even wet roads but now it will light the tires up on both. I've had to change the way I drive to keep her planted. I will say that the improvement was not immediate. It was probably the 3rd day after loading the tune when everything clicked with the tune. The most beneficial adjustment was the throttle response adjustment option. It gives you the option to adjust response 1% to 20%. Do the 20%! It will make you fall in love with your hemi all over again! Go lightem up!!(Update) Can't express enough how important it is to make sure your engine is running cool (180 thermostat) after loading the tune my truck was running waaaay better especially in the mid to high RPM range. But I noticed my motor was still running around 200 degrees even with the 180 thermostat (bought from local auto parts store) so I ordered a Mishimotto 180 thermostat and installed it today. Mercy it was like adding a tune to a tune. Now I'm truly running in the 180's. The power is across the board now and just light the tires up dangerous. Before loading the tune make sure you have all other mods complete first. The power of the tune is dependent on other mods like thermostat, CAI, exhaust.

So I used this for drive ability and performance for my 2015 GMC Sierra 5.3. And to improve towing and delete that stupid DOD and AFM. It did both and I’m currently using a can tune for 87 octane. Makes a pretty big difference and drives much better than stock. The only things I can say thats negative..1) it froze on me in the middle of setting my tire size. Had to pull my negative battery cable off and then pull the module out and back in to reset it.. was worried about messing up the CPU. But it corrected quickly. I read online that you should pull the battery cable if this happens. And was able to reflash what was needed. It also saves stock parameters on the device. so if you need to go back to stock for service at your local dealer, you can. Also make sure you have immediate WiFi “AT ALL TIME“ during the tune and download ANY updates before you even start.2) very vague on written instructions on how to do stuff. This the 4 star tech support rating. I here they actually are Johnny on the spot if your in a bind. But luckily I didn’t have to go that far into the rabbit hole.3) Lastly, and it isn’t a negative, just good info, only use the octane tune you actually fuel with.. I can’t go full diablo 93 tune because no one in my area sells 93 octane.. and as soon as I get this 89 octane ran out of my tank , and fill up a couple times w 91.. I will switch to the 91 octane tune. If you run a higher tune with a lower octane, you will start pinging and run the risk of blowing stuff up in your motor from running too lean on your fuel trim. All of these that I’ve listed either I’ve already been through, or I had to do a lot of research online .. def do your research before attempting. Gas mileage I can’t tell yet. But the way I drive, I expect a decrease. Lol. I would have given it 5 stars because it does make a huge difference in just drivability, except it froze on me during flashing, and put me in panic mode.. and In the written directions it comes with, should describe what you should do if that happens so you don’t stroke out thinking you messed your ride up.

Purchased this to disable the AFM in my 2007 Chevy Suburban and it worked perfectly. The tuner only took about 15-20 minutes to backup factory tune, install new tune and disable AFM. Would highly recommend this for anyone with a 07-13 Chevy Suburban if they want to do the same.

Tune my my C5 Corvette really nice

This item did what I needed tuned my truck to 93 octane and eliminated DOD/AFM which is what I was expecting to get rid of and transmission to shifting firm and 20% throttle response. This made my truck shift better and overall perform like it should have. The instructions are very clear but make sure you update it. Got it for the right price as well and now my truck is growling like it should.