Jet Performance 15024 Performance Programmer

Well after getting units that were used and locked or something wrong with unit and giving me an error code. I was able to use the 3rd one and adjust what I needed.

Used it on a K2500 with the 7.4 Vortec. Worked great for me, didn’t have the issues others have reported. I didn’t notice any performance gain with the tune that’s on it but the firmer shifts I can definitely feel and like over stock. Also I was able to adjust for new gearing and tire size after a lift which is my primary reason for getting it.

Easy to use. Accents other modifications to help everything work together. Always remember when it says to turn on ignition DO NOT START THE TRUCK. Turn the key on but do not attempt to start. Might work with a stock truck OK. Will work better with bolt on mods. Pretty much deletes the speed limiter. 200+mph limit Max. I would recommend if you plan on modifying your rig with simple bolt-ons. Also a diagnostic tool to trouble shoot those check engine lights.

Fried my pcm

Used it to tune up my 96 1500 with a 350 in it, upped it to run premium, removed speed limiter and for quick shifts that save the clutches, had no problem with frying ecm

Works Good, Takes some experimenting with to figure out input between the motor, the vehicle computer, the gear ratios to tire size, but it works. When everything is set correctly then the speed odometer works correctly again. After two to three tries I learned the main adjustment was the tire size entry. Enter the correct tire size then adjust tire size in the programmer up or down 2" to 3 " like you have 37" tires and the speed is still off, try 35" then you'll be able to get your speed gauge to within 1 to 2 mph. You can test by driving two cars side by side at a certain speed or use a GPS. GPS always shows your vehicle's correct speed.

Worked without any issues!! Not sure why people have issues with their ECU's...just follow the simple instructions and you shouldn't have any issues!! I did noticed firmer shifting and overall better performance from my 1998 K1500 Silverado Z71 w/5.7L, 4L60e tranny. I recently swapped out the POS stock Gov-Loc 3.42 rear diff after it grenaded with 3.73 gears instead & a DuraGrip differential from Yukon (rear axle) so I had an excuse to purchase this programmer to fix speedometer reading. Now time to swap out the front 3.42 with a GT4 (3.73) from a 1997 Suburban from pick-n-pull ($150) and job is complete!

I get better gas mileage can go over 100mph more. Didn't need tech support. So easy to install A cave man could install this.

J'ai acheter ce produit pour changer mon changement de vitesse a la transmission, et pour faire le changement de la grandeur de mes pneus. Le produit reconnais mon camion mais quand vien le temps de r'entrer la programation il ne reconnais plus le camion, et pas clair comme machine. 400$ dans les vidanges.

The media could not be loaded.  Ordered this product, had to wait a whole month for it to get here. Then once it’s here I find out that it is already been used by someone else and does not work. Now I am sending it back and I had to pay the $30 postage to return it for something I did not get to use and was defective. I have taken video and picture proof for Amazon to prove that I was not the cause.

Improved the performance of my 1997 GMC C1500 by adding a few more horsepower and changing the shift points enough to make pulling my 22 foot RV much easier. Especially on hills.Maybe added 1 mpg and could have used a little more power but overall a good improvement for my truck.Easy to use.

Did exactly what was advertised