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**cdub2010** · 08-08-2022, 09:28 PM

The supercharged 5.3 was a real mild tune in a 2004 yukon xl. It made the truck fun to drive but it was nowhere near a fast truck. With the awd and boost It would spook people off the line but it really didnt have much after that. The mileage of under 15 and need for premium fuel really sucked the fun out of it being a daily driver and all.

Compare it to my 08 yukon. supposed built NA 6 litre, 4l80e with mild cam setup for boost. Its pretty similar quickness but its mileage was about 12 mpg. I have a 78/75 turbo for it but everything is on hold now. I really cant believe the mpg would get better. but you never know.

08-08-2022, 09:28 PM	#4
cdub2010 Senior Member Join Date: Apr 2014 Location: detroit mi Posts: 206	Re: Some 5.3L questions The supercharged 5.3 was a real mild tune in a 2004 yukon xl. It made the truck fun to drive but it was nowhere near a fast truck. With the awd and boost It would spook people off the line but it really didnt have much after that. The mileage of under 15 and need for premium fuel really sucked the fun out of it being a daily driver and all. Compare it to my 08 yukon. supposed built NA 6 litre, 4l80e with mild cam setup for boost. Its pretty similar quickness but its mileage was about 12 mpg. I have a 78/75 turbo for it but everything is on hold now. I really cant believe the mpg would get better. but you never know.