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Discussion Starter #1
Things seem to be a little quiet around here so I figure perfect time to ask a stupid question.

What functionality do you lose if you do an LS swap without using a kit? I understand that the dash is worthless but what about everything else: radio, HVAC, power everything etc...?
 

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Not just the dash but all the idiot systems. Cooling, alternator charging, and A/C run through the TIPM. For emissions you must be able to show the OBDII system is fully functional and no check engine lights on the dash.
 

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Discussion Starter #3
Not just the dash but all the idiot systems. Cooling, alternator charging, and A/C run through the TIPM. For emissions you must be able to show the OBDII system is fully functional and no check engine lights on the dash.
cooling and alternator can be run stand alone. Think the drive train of a buggy but wrapped in a JK. Question is can the A/C controls still be used?
 

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EVERYTHING is run through the can. I have thought about this myself being on the other side of the swap now. Not knowing when I got started... what I would do NOW if I had it to do over again and now realizing where all of the supplemental components come from is literally just buy the individual parts from various vendors. Now you will have to break down and buy somebody's can box to make everything happy. The one from RPM extreme "seems" very simple. Its the work that went into developing it that was hard I suppose. I haven't cracked it open but it cant hold anything much larger that a raspberry pi and a breakout board. Other than that and the harness literally everything else can be bought from other vendors or fabbed. Those 2 items are literally "the swap"
 

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EVERYTHING is run through the can. I have thought about this myself being on the other side of the swap now. Not knowing when I got started... what I would do NOW if I had it to do over again and now realizing where all of the supplemental components come from is literally just buy the individual parts from various vendors. Now you will have to break down and buy somebody's can box to make everything happy. The one from RPM extreme "seems" very simple. Its the work that went into developing it that was hard I suppose. I haven't cracked it open but it cant hold anything much larger that a raspberry pi and a breakout board. Other than that and the harness literally everything else can be bought from other vendors or fabbed. Those 2 items are literally "the swap"
^^^^^This right here^^^^^

From what I understand there's two choices. You either keep everything talking together through the CAN......or......you standalone the engine and remove all the wiring and wire it up like a hotrod.

When you try to split the difference is where you'll run into problems.

Ribi-8 asked the million dollar question. Emissions? Do you have to deal with that can of worms?
 

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Discussion Starter #7
That's a good question for Robbie...I think the TIPM controls it. Are you not wanting Emissions?
Ribi-8 asked the million dollar question. Emissions? Do you have to deal with that can of worms?
I just moved to Denver so I technically need emissions but there are ways around it worst case.

I can live without integration as long as all the creature comforts still work but you guys say Ill lose HVAC, power everything etc... if I try to have 2 stand alone systems.
 

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I just moved to Denver so I technically need emissions but there are ways around it worst case.

I can live without integration as long as all the creature comforts still work but you guys say Ill lose HVAC, power everything etc... if I try to have 2 stand alone systems.
I think the only way to get a proper cut and dry answer is to have Jon @0lllllll0 RPMEXTREME or Robbie @MoTech chime in with their knowledge of exactly how things work.
 
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It can be done and you can eventually get most everything to work. But it will cost you more time and money than just purchasing a kit and doing it correct from the get go. Most guys that may know the work arounds for some of the basic systems don't like to broadcast it to everyone.

Making the GM side run standalone it easy bringing the Jeep side into the equation is the hard part. Everything is pretty much CANbus, heck even the ignition switch is CAN bus so you would have to find a work around for that too.

And there is a lot more than a raspberry Pi inside our EZcan modules. :nerd:
 
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EVERYTHING is run through the can. I have thought about this myself being on the other side of the swap now. Not knowing when I got started... what I would do NOW if I had it to do over again and now realizing where all of the supplemental components come from is literally just buy the individual parts from various vendors. Now you will have to break down and buy somebody's can box to make everything happy. The one from RPM extreme "seems" very simple. Its the work that went into developing it that was hard I suppose. I haven't cracked it open but it cant hold anything much larger that a raspberry pi and a breakout board. Other than that and the harness literally everything else can be bought from other vendors or fabbed. Those 2 items are literally "the swap"
Some of the smaller items are available and can be sourced. The main ticket items in the "KIT" are the Harness and CAN module. These 2 items are integrated together and made to work with all the wires in the correct spots. Just going back and installing a generic "CAN" module to a standalone harness won't get you much of anything.

The reason people buy a "KIT" is they want everything in the box ready to go with good instructions.
 

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This is a question I've been wondering myself. I'm cool with everything being stand alone/hot rod style. The only thing I would like to keep is the HVAC system. I've also been wondering about (gen 3?) swap, aka the early 2000s ls engines.


Sent from my iPhone using Tapatalk
 

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the HVAC was the biggie for me too. I was trying to explain to my dad why it was so expensive and why ya can’t just plop another engine in and have everything be happy...but my knowledge was not good enough lol.

I have no doubt with his abilities, we’d end up with a sweet ass, functioning V8 jeep...but is it worth the hassle?
 

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I'm eagerly waiting to see how Kowboy's turns out. He's going about it the right way, as far as the new dash and individual gauges goes. It will interesting to find out how the stock HVAC works. The dash controls are mechanical cables but, there's still a few wires that go into the unit (not the wires for the blower) and I was never sure what they did.

I figured he would have gone with a Vintage Air system, maybe there's just no reason to. Unless you run into packaging problems with cage-work or something like that. Those VA units are pretty compact. Point is, you don't have to keep the stock HVAC system at all if you don't want to.

Chuck,
If you're going stand alone, you'd be able to run any engine/trans combo you want.
 

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I'm eagerly waiting to see how Kowboy's turns out. He's going about it the right way, as far as the new dash and individual gauges goes. It will interesting to find out how the stock HVAC works. The dash controls are mechanical cables but, there's still a few wires that go into the unit (not the wires for the blower) and I was never sure what they did.



I figured he would have gone with a Vintage Air system, maybe there's just no reason to. Unless you run into packaging problems with cage-work or something like that. Those VA units are pretty compact. Point is, you don't have to keep the stock HVAC system at all if you don't want to.



Chuck,

If you're going stand alone, you'd be able to run any engine/trans combo you want.


That's always a viable option, but it's something I'd rather not spend the extra money on if not needed. If I remember correctly they're pretty expensive. I would also have no problem running all chevy wiring/computers if that's viable.
I'll be honest and say I haven't done much of any research into this as I still have quite a few projects before a motor swap.
 

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Having just completed a swap myself (08 JKUR/L83/6L80) I would not want to try it without a kit. These engines are basically big computers, and there's a ton of data flying around.

If you were going old school with your basic TBI 350, that would be one thing, but if you're using a more modern motor/trans setup, you're asking for a long journey chasing down electrical gremlins.

Just my two pennies.
 

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Having just completed a swap myself (08 JKUR/L83/6L80) I would not want to try it without a kit. These engines are basically big computers, and there's a ton of data flying around.

If you were going old school with your basic TBI 350, that would be one thing, but if you're using a more modern motor/trans setup, you're asking for a long journey chasing down electrical gremlins.

Just my two pennies.
Who's kit did you use?
 

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Who's kit did you use?
I went with Motech. It was a beta version of their Gen V kit. We're currently putting a Gen IV LS3 into a friend's Jeep, also using a Motech kit.

Just having seen how interconnected the PCM is to everything, it would feel pretty daunting to try to tackle that piecemeal. But that's just me. Others may have a different view on that.
 
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