We know alot of people have questions when it comes to installing a LS engine in their JK. We are opening an official tech thread for anyone running a LS engine or planning on running an LS engine.
We know there are several kit options in the marketplace and we can only speak for our own in this thread, but we will try to be helpful no matter what kit you are using. With that being said most of the info posted here will be related to the RpmExtreme swap kits for 2007 - 2011 Jeep JKs and may not apply to other kits.
We know doing a LS Swap is a big investment and there are many many options to sort out before you pull the trigger.
We will try to lay out the most common options and concerns in the next few posts and will field questions after that.
Please keep the posting to technical questions and things of that nature.
Here are some common terms to make sure everyone is on the same page.
GEN3 refers to earlier 2002-2006 engines
GEN4 refers to 2007-2013 engines
6L80e and 6L90e refer to a 6 speed automatic transmission commonly used with the GEN4 swaps
4L60e, 4l65e and 4L80e refer to a 4 speed automatic commonly used with a GEN3 swap
DBW refers to drive by wire. This would be a system where you don't have a throttle cable. This is the preferred system for an LS JK swap
TAC Module refers to the DBW module used with GEN3 engines
APP refers to the accelerator pedal (gas pedal)