Bully Dog40410 Triple Dog GT 50-State Gas Tuner

Don’t fool yourself into this purchase if you have a Nissan Armada. I installed this Bully Dog GT tuner on my 2012 Armada and saw about as much power gain as simply adding a K&N air filter, which is next to nothing. On the other hand, I installed a SuperChips Cortex on my Titan and dang near burned the wheels off of it. Same 5.6L engine on both. I even used the Bully Dog GT to advance the timing 2 degrees, still nothing. Set the tune to performance and used 93 octane gas, still nothing. Power? No. Fuel economy? Nope. Awesome performance take off? Not even a little. $429 prank by Bully Dog. But, it’s up to you. I’m just giving my honest two cents. Don’t say I didn’t warn you.

Installed this on my PERFECTLY RUNNING WELL MAINTAINED 2001 Silverado 2500hd 6.0L 137 000 miles. Tuned the truck for towing and changed the tire size setting to the new KO2's I put on. My first trip after the new tune was not good. Truck had a random low RPM studder but seemed to have better overall better performance. Next, the tire setting, inputted correctly, was off by 6MPH after tuning. Got back from the trip and truck seemed fine when I shut it off. Next morning It would not start. With the key off/pulled out, Bully dog hooked to ignition fuse power/ switch set to external power, plugged into the OBD2 Port, it had some type of internal failure, flashing screen and the truck mileage odometer was lit and flashing. I unplugged it from the OBD2 port and lights on the cluster turned off, keys still not in the truck at this point. The Bully Dog seemed to have shorted itself because everytime I plugged it back in, the cluster lit up, odometer lit, Note; it was powered correctly to fuse panel. The truck would not start. HUNDREDS of dollars later and reflashed to stock I finally got the truck running. It totally screwed up the electronic timing, air and fuel settings. I had to test signaling from every sensor, MAF, MAP, crank, cam, temp, air fuel valve, TPS, and fuel pressure regulator, injectors and fuel pump. It had screwed up the tune on the ECM so bad the signaling from multiple sensor were not being precessed properIy. Because of this it even changed the transmission shift pattern to a harsh neck snapping shift. I would never plug one of these units into my OBD2 port. Legal action should be taken against this company. DO NOT BUY.

Bought my first ever gas truck after always owning diesels. 2012 Nissan frontier sv 4 litre v6 40k on the clock.I really could not believe how gutless it was, didn't really notice at the test drive.It would struggle in 4th and 5th when climbing, you really had to give it throttle.It also had an annoying vibration at idle that I've read a lot about.Installed this unit, adjusted the idle by 50 rpm which solved the idle vibration.The tune really improved the performance and gave it some power.Mpg pretty much the same, average 16 mpg for 75 percent street driving. So happy I bought it as I was about to sell the truck. It also has a number of other useful functions.

Bought this for my 2005 Ford F-150 with a 4” lift, 17” rims with 35” mud tires. I was getting a constant 10mpg no matter if i was driving on the freeway, city streets or towing my 18’ toy hauler. I have it paired with a banks ram air kit and I am now getting 17mpg on the highways and 13.5mpg on city streets. Definitely a big change in power and throttle response! For me this product definitely paid for itself just on what I’m saving on fuel alone.

Amazon said that this fit my truck 2004 F150 it did not it cost me $850 to buy a new ECM and have programming repaired very dissatisfied with the situation it does not fit 2004 F150.