I have a 2010 JK with 35" tires, 4.5" lift &amp; danas. How does this improve shifting and sluggish starts? What feature of this product would be used?
592007
I have a 08 JK with 33" tires and a 3" lift. Before installing, first and second gear would wind out nearing red line if I was driving somewhat hard. After installing, my shift points were changed to make this a more smooth takeoff. I have been running mine on the 89 octane setting. I have been using this for about 10k with no issues. I also programmed the size of my new tires in to correct the speedometer to adjust in tire size. There wasn't much difference since I am only running 33" tires. On the hwy I am getting between 17.5 and 18.2 mpg running 70-75 mph.
231611
I didn't have any luck with it on my 2010 JK it was very frustrating. I didn't notice any performance or economy difference. It did mess up my idle and low rpm it would miss and sputter after downloading the software.
1838027
My truck has 85000 and it's made a dramatic improvement. Shift points speedo fix for tire size and rpms go farther between gears. I recommend it. Specially if your running with a lift and oversized tires.
1753620
Not much horsepower gain. It adds a lot more audible boxer rumble to the exhaust. Low end torque is reduced slightly, but still worth swapping into your vehicle.
1643314
You ned to install a tension adjuster on the rear shift cable, somewhere between the shifter and derailer. This can be an inline barrel type, or a cable stop type.
51311
It worked on my 2011 JK. The manufacturer's specs should indicate which years are covered. BTW, it doesn't really increase your gas mileage, it just adjust your odometer/speedometer to accurately reflect your mileage/speed. When you go to a larger diameter tire, the number of wheel revolutions per mile decrease, which makes it seem like you aren't going as far or fast as you really are. This accounts for the apparent decrease in gas mileage, and can get you a speeding ticket if you aren't careful.
1537079
On the economy setting expect 1-2 mpg gain. I run the tow setting and get the same fuel economy as stock with much more throttle response. Take into account I have an 07 3500, 5.9, 6 speed manual
1438381
I didn't have too do any thing to mine, I'm told the newer bikes are more tolerant too small engine mods.... all I've put on mine so far is the K&n; RK cleaner, and some aftermaket slip on mufflers , and it runs great / lot better than stock..... no complaints at all, and still has that stock appearance. Hope this helps you, good luck K.L.
46389
i am not sure about the tj performance gains, but i imagine it would be equivqlent to my jk 3.8. i am very happy with the performance gains, still better than stock, even after adding 35" tires. i would definitely recommend it.
1160132
Your lucky, I only get 11.2 mpg. I haven't tried the performance programming yet. I am only using the tire size setting for my FX4. Let me know what you get for mileage.
1469737
Not sure, but you don't need any spacers to run these on a jk. I installed these myself after I got a 3.5" lift kit installed. Back spacing is perfect to run these without wheel spacers or any other mods
2250394
I think it made it shift quicker but not much noticeable difference. It made a nice difference in diesel mileage about 2 to 3 miles per gallon as close as I can fiqure it towing and not towing big difference in the power very happy at this time only used about 4 months now
362286
Unicorn... When i bought mine i noticed a tiny bit of power increase only on the lvl 4 tune. I think they rate it at 25 hp gain, and 24 ft lb torque. The thing i really liked about it was it had firm shifts all the way through 3rd gear. Definitly going to help if your towing. But if your looking for just hp increase overall i would get a blackbear tune. Wont get number like a diesel but it will definitely help.
1864112
The speed will make a difference. Consistent high speed will reduce run time. I do not know how much as I have only used mine for a few hours with a 40 lb Minn Kota on a 10.5 foot Porta Bote. I believe the Minn Kota Endurance has a graph on it showing run times at different speeds. These would be approximate times, but from the reviews I have read the run time is very good. Can't beat the size and weight. The Toyota Tacoma has an inverter outlet in the truck bed that delivers 120 volts and 400 watts while the truck is moving. This is a great way to keep your battery charged.
90799
No, I also have 35" tires on 17x9 Fuel wheels on my 2015 JKUR. They allow enough air to leak out when under pressure that they will not inflate more than 30psi. They don't work very well for air-down either. Don't buy them for your JK.
35877
I purchased this device once before in hopes of adding torque. It doesn't add torque or even increase the mpg on your vehicle. It does however, make a cool noise when you step on the gas. But there is also an annoying whistle sound when you're just driving around. So again, no actual benefits except for "performance sounds". I hope this response provides clarity in your decision.
1047862
I have an '06 LJ with a 6 speed manual and 8" lift. I noticed a definite increase in power-maybe 10%. Gas mileage unfortunately stayed the same, even after exhaust and air intake tweaking.