DiabloSport 8200 inTune i3

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

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.

Works well has a lot of different things you can do

This item did not work. Wasted time and had to wait extra 2 weeks before they would refund my money. Avoid seller this is a third party

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.

Works like it should now I can do race car

You will have to update your vehicle before you can tune it. Cost $40 and you have to wait for the cord to arrive. Very frustrating. Gets more complicated by the step. Still haven’t got to actually change anything yet.

Installed this into a 2009 Silverado with a 5.3.I updated the unit first and set up the wifi before I went to the truck. I also registered the product automatically at that time. The next day after work sat in the drivers seat and plugged it in. I installed the 93 tune, firm tranny shifts and removed the speed limiter. The programmer backed up the original truck settings before it installed the new settings. The check engine lights went on and off, door locks went up and down and it stopped. The tuner said it's finished and enjoy the tune. I went back into the advance settings and under ECU I turned off the DOD, it reprogrammed it for that. Same procedure with the truck dash lights blinking then I get the your done message on the tuner. I unplugged the unit and fired up the truck. No idiot lights and the truck was running smooth. Took it for a spin. No issues. I stepped on it and my head bounced off the head rest. Holy Smoke this truck is alive now. It's faster than before. It put a smile on my face. It's worth the money. I'd recommend this to anyone.