I know these products tend to get shoveled over to the snake-oil classification by many folks, but for what it's worth, the Sprint Booster works well on my 2013 JK Rubicon.

I will try and provide a little history on why I tried a $300 dollar performance gadget. After putting many miles on my 2009 JK Rubicon, I decided I wanted something newer. Being addicted to Jeeps (this is my 11th), and after reading all the buzz about the new Pentastar 3.6 engine, my mind was made up on getting a 2013. 40 percent more horsepower, 10 percent more torque, 26 percent faster 0-60 mph, what's not to like right? Well after owning my 2013 for about a month now, the 3.6 did not seem to be living up to all the hype. Heck, the 3.8 in my 2009 seemed like it did way better, at least on the low end. To be honest, I also ran a Hypertech programmer on my 2009 with the "regular" tune setting. Maybe this was the answer. I needed a programmer for my 2013. After researching a bit, I realized there is no programmer option for the newest JKs, at least not yet. I said heck, I'll give the Sprint Booster a shot. I'll return it if it proves unworthy.

Today the SB showed up from UPS, and I got busy installing it. It says you must remove the pedal assembly for install, but I soon realized that step is not needed. If you don't mind fiddling around just a bit, and don't have gorilla hands, you can get the SB plugged inline pretty easily. Just remove the knee panel under the steering wheel so you can see what you are doing. Almost forgot, I also gambled on the SB part number listed for the 2012s. They don't have a unit listed for the 2013s yet, but I figured there's not really any difference in a 2012 and 2013. The SB 2012 unit installed with zero issues on my 2013.

Now to the fun stuff. I got out of the garage and headed to a flat stretch of road with the SB turned off. There a 3 stages on it, and a little dongle / button that let's you make the changes between them. I went for the red setting out of the gate, major difference in take-off throttle response. Tried green setting after that, and things still worked well albeit a little more tame. I probably will grow to like the green setting best. I then tried a few 0-60 runs, and determined my times had been improved modestly (about 1 second shaved off now). Then, to prove it was not all in my head, I turned the SB off. You definitely notice the difference then. After some more driving around town trying the settings, I headed back to the house.

My final summation is that the Sprint Booster is a keeper for me. It's by no means a miracle worker product. It's not going to add gobs of HP and let you turn a set of 37s better when you should have re-geared. Let's just say it lets the motor you bought actually put the horsepower it already has in itself to the wheels more efficiently. No more of that "mini-van'ish" feeling with the throttle anymore. The 3.6 along with the SB totally kills anything my 2009 did with a tuner. I have not doubt now that you will feel better throttle response and torque at take-off than stock settings. The drive-by-wire setup really makes the JK's motor a real under-performer in normal driving conditions according to what I know now.

Hopefully this will help someone out there.

Regards

 

Probably modifies the scale on the accelerator pedal.

 

Where are you at in Mississippi? I might grab one.....not really impressed with the 3.6 either

 

Does that void warranty ? I was told computer has flash memory and dealer could tell if you did anything to it.

 

It removes the lag you feel on the throttle by wire system. I had one on my 3.8 and it helped. I kept it when I swapped in my 5.7vvt and it works on wonders with it. Red setting is too much though, so I leave it on green. Simply plugs in behind pedal, no software. easily removed if you are afraid of dealer inquiry.

 

I looked thus up. Is it only for automatics

 

No, lots of guys with manuals seem to like it too. I'm a 6 spd and considering it.

 

The Sprint Booster is not a re-programmer or tuner. It's a module that goes inline between the gas pedal and computer. It in no way alters ECU flash memory or programming of it like a Superchips, Hypertech, et al would do via the OBD-II port. Also unlike your typical tuner, it is easily turned off altogether and bypassed at the touch of a button. The dealer should not even know it's there unless they look under the dash.

 

Right, you don't gain anything but throttle response, it's like the I-Drive in Sti's

 

$300 is a lot of bucks for a few components in a piece of plastic. All it does is change scaling of the signal sent to the computer, (which is unaware the booster exists) making it think you are pressing on the pedal further and faster than you are. Really it seems one could just push the peddle faster and harder and do the same thing.

Despite that, and somehow, it still makes a difference (to me at least) and I do not regret the purchase.

Even with the 6.1 it improves (perceived) throttle response. I do run it in the most agressive (red) mode because it seems to help the RFE 545 tranny shift points work better with this motor.

I turn it off before anyone else drives it of course, because it makes the pedal a little "hair trigger" for anyone unaware and could therefore be a little dangerous.

YMMV.