Rear Mounted turbo - 2014 GMC Yukon XL (5.3L)

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SidewaystheSeven

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Any updates on this? In theory, what you've listed will work. The T3/T4 will give you the low boost you're looking for to keep it safe. I will say that I think there are "better" ways to go about this, but you've got the basics down. As far as a tune, I would install everything and have it towed to a tuner to be safe. No sense risking damage after going through all the trouble of putting it together.
 

ibfreeman88

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I can't say that I've done the remote setup but I do currently have a NNBS Tahoe that I'm almost done installing the ON3 kit on and should hopefully have it running by the weekend and also have a thread on here for those that are considering the turbo route. I personally would buy a complete kit for the sake of headache as well as the downtime involved trying to see what will and won't work as well as fit where.
IMG_2240.JPG
 

Rocket Man

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I can't say that I've done the remote setup but I do currently have a NNBS Tahoe that I'm almost done installing the ON3 kit on and should hopefully have it running by the weekend and also have a thread on here for those that are considering the turbo route. I personally would buy a complete kit for the sake of headache as well as the downtime involved trying to see what will and won't work as well as fit where. View attachment 203191
Link to your thread?
 

Tahoeyukondenali

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Google will only get you so far from theoretical to practical application.

I was hoping to get at least some useful information like:
Hey the turbo is too small... try something like this ***
You will need a custom tune and that is $$$$$$
Stock injectors wont work for your requirements... etc etc

This way I could have a starting point to start doing research and go from there.

When launching a project you need to define the scope of work, expectations and bounce ideas off of others in order to successfully deliver the project.
In this case, this may not be the correct forum to do this on and I will have to go elsewhere to figure this out.
Try using perplexity ai it comes up with some pretty good info as it comes to builds I've been throwing build scenarios at it for a couple months and only stumped it once
 

2011burbLTZ

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It's easier than you think. I would opt for a T4, something in the 65mm range on the compressor and a 65-70mm exhaust. You could prob get away with a smaller one but the ebay cheap turbos are usually odd sized with small exhaust housings. Then you just run 2.5" aluminum pipe up to the MAF/TB. You will need a turboworx oil pump to circulate the return oil back to the engine and obviously oil from the engine to the turbo. Then its just tuning... HP tuners, 2 bar and you could even just convert that to speed density should have you covered. I would opt for slightly bigger injectors if you don't have the room and I run 72lb which idle and drive fine. Last thing would be the fuel pump which could be fine or you can swap in a 320lph and call it a day. anything really under 5psi you don't really even need to adjust timing, just richen the fuel up after 3psi and maybe take 1-2* out if you really that worried. Rear mounts are super easy, hardest part is the oil return. A T3 would be more responsive but exhaust limiting in the upper ranges... also you don't want boost in the lower RPM range as thats how you bend rods. Boost should come in around 2500-3000 and give you more top end, low end you should be out of boost and enjoying better MPG.

I have two other turbo 5.3s in cars one runs on 87 pump gas, 7psi boost with a FMIC and a small 2GPH of wiper fluid Water/meth. I generally run holley TermX's as they are just easier to tune but I did tune a stock ECM with HP tuners after changing it to a 2bar SD tune and it worked fine for years. I also rear mount turbo'd a 1990's suzuki katana 600 crochrocket which had 4 carbs and that was fun but worked great.
 

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