Do I need to modify my Jeep instrument cluster?
No. There is no need to remove or modify your cluster.
Do I need to modify my Jeep shifter?
No. There is no need to remove or modify your shifter.
Do I need to modify my original Jeep engine harness?
No. Your Jeep engine harness will be removed with your engine and is not used.
Can I use my own GM engine computer?
Yes. As long as you are using a E38 ECU with a correct calibration.
Do I need to send in my Jeep computer?
No. There is no need to remove or modify the factory Jeep ECU.
Will I need to regear after a V8 swap?
No in most cases. With the extra low 1st gear and 2 overdrives the 6L80E has, you won’t need to gear as deep. 3.73–4.10 will do great up to 35s and we recommend 4.56 on 37s.
Do I need a different radiator?
Yes. With the limited airflow of the JK and the increased power of the LS engine, we recommend our dual core 52mm aluminum radiator.
Do I need a different cooling fan?
No. Our system will control the stock 3.8 & 3.6 Cooling fans, we do recommend upgrading the 3.8 fan to the newer Pentastar 3.6 PWM fan as it moves a lot more air.
How do I recalibrate my speedometer?
You will calibrate the speedometer the same way you did before. You would use a handheld flash tool or an AEV ProCal to adjust for tire size.
Will my ABS still work?
Yes. Your ABS system will still operate like stock.
Will my AC still operate?
Yes. Your AC will still operate like stock.
What kind of fuel mileage should I expect?
Fuel mileage will depend on engine size, tire size and vehicle weight. On average we see 14–16 MPG around town and 18 on the highway.
Do I need different driveshafts?
Usually. The transfer case will sit around 2” further back compared to stock. Most of the time you will be shortening the rear and lengthening the front.
How does the TAP shift work?
Tap shift will operate a little different depending on what year your Jeep is.
07–10: Place the shifter into “manual mode” (position 2). The display will go from (D) to (1 2 3 4 5 6) depending on what gear is selected. Use the cruise control lever to “TAP” up or down.
2011: Operates similar to 07–10. Place the shifter in “manual” and then use the cruise buttons on the steering wheel to “TAP” up or down. We also offer an upgraded cruise switch that has “GEAR + and GEAR –”.
2012 and newer: Pull rearward on the shifter to the last position. From there you can TAP left or right on the bump shifter to TAP up or down, or use the cruise switch.
How does TOW-HAUL mode work?
TOW-HAUL is a second shift mode that can be toggled on or off with the O/D off button located on the auto shifter (07–11 only). When the O/D light is lit, you are in TOW/HAUL mode and running a different shift pattern. This pattern can be custom programmed for towing, performance, off-road, etc.
What is the CAN bus?
The CAN bus is the way all the computers on a vehicle communicate. All modules “talk” over two wires and can send messages back and forth.
What is an EZcanbus module?
Our EZcanbus module acts as a “translator” between the GM and Jeep CAN bus systems. It translates the data so both systems can understand each other.
What accessory drives can I use?
You can run GM truck accessories, 2010–2014 Camaro accessories, or Corvette/CTSV accessories with an aftermarket AC compressor.
Will my Rubicon transfer case work with this swap?
No. First, nobody is making an adapter for the 241OR. Second, with the low gearing of the 6L80E, you would have an extremely low 4WD low range. The factory 241J (non-Rubi) case is geared 2.7:1 and when bolted to a 6L80E, its low range will be comparable to a factory Rubi 4.0:1.
Will my remote start still work?
Yes. The factory remote start will work just fine.
Will my Rubicon lockers and sway bar still work?
Yes. The factory Rubicon features will still operate the same even when using a non-Rubi transfer case.
What fluids should I use?
We recommend using factory-equivalent fluids.
What engines can I use?
You can run any Gen4 GM engine. We recommend trying to stay between 2010 and 2013, but any 2007–2013 engine will work. We support VVT and AFM as well.
What transmissions can I use?
We support the 6L80E and in some cases the 6L90E. We recommend using transmissions from 2010–2013 due to ECU compatibility. You can run 2007–2009 6L80Es but they must be matched to the same year engine ECU. Anything newer than 2013 will need to be reprogrammed to 2013.
Do I need a GM body control module?
No. Our can bus technology does the job of the GM BCM.
Do I need to add a reluctor ring on the engine?
No. Our can bus systems takes care of tachometer.
Do I need to add an extra coolant sensor on the engine?
No. Our can bus system takes care of that for you.
Can I run a manual transmission?
Yes and no. GM never ran a manual behind a Gen4 truck so proper calibrations are limited. Also, there are few good options for manual transmissions that accept a transfer case. We can supply a “custom” setup that will work, but you would be responsible for fitting the transmission to the vehicle.
Can I convert my Jeep from manual to automatic?
Yes. All you need to do is install the factory shifter parts and console pieces. We can supply you with these part numbers. Once installed, it will operate just like a stock auto Jeep with the dash showing PRND as well.