DiabloSport8200 inTune i3

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.

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.

Guys I bought this used and tried to use it on my trusck. The item never worked I took it to 4 different shops no one could get it to work.

Very easy to connect and install (2000 C5 Corvette) the provided tunes (91 Octane, 93 Octane). Performance difference was immediately noticeable. Initially purchased to adjust cooling fan temps but the provided tune took care of that automatically as well. Only hiccup was the dash stopped working but a quick Google search said to disconnect the battery for 15 minutes (to flush the ECM) and everything was good again. Very happy with the purchase,

Works like it should now I can do race car

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

Got my Diablo tuner today. Plugged it in the OBDII port and updated with WiFi no problem. Selected the options I wanted and installed the tune. (87 tune, firm shift, afm/dod off, speed limiter off) I have a Shiftpower throttle response already so i use that instead of the Diablo tuner so i have control of throttle response at all times. Make sure you select everything you want then let it do its tune. If you forget an option all you have to do is install it again. I forgot to turn the afm/dod off so I turned it off then installed the tune again. Works great. And no, I didn't have to pay an additional $40 to use the tuner.

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.