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Troubleshooting Car Performance (Altitude/Tune)

5:30
35:29
40.3K views

At 5:30 in

Rocky Mountain Race Week Day 3: Race Day in Pueblo! How Will Uncle Rob Handle The High Altitude Air?

What happens here

While driving, the main character explains that the GMC Yukon XL, nicknamed 'Uncle Rob,' is behaving strangely due to the high altitude at the track, causing it to idle improperly. Logan, the passenger, takes over driving to experience the unusual handling and power firsthand, noting it feels both surprisingly potent and 'weird' for a vehicle of its size.

Goal: Diagnose and understand the car's performance issues related to altitude

Tools and materials

  • GMC Yukon XL GMC — The vehicle being diagnosed for performance issues

What they say

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yeah it's a lot of driving how's the air conditioning hanging out this is the best ac of any vehicle i've ever had the beautiful thing about these chevrolets is you can keep the ac and still go fast really yeah my boost so i kept the acn too i put single cab air conditioner accumulator in it it's really small so i still fit my forage downpipe right past i don't have a lot of air conditioning but if you sit in the front seat it's fine you're still here we're still here still kicking yeah we're getting a little hot yesterday but we're here how has uh how was your week been going so far it's been going really good yesterday the only issues we had were the fuel got so hot and vapor locked and so it was two miles from the hotel so i switched over to the race setup and we drove it all the way there but garrett was having the same issue everyone's fuel's just so hot and trying to keep up with those guys i'm a running 4000 rpm in second gear and everything's like through the roof hot so we back down and then dropping back a little bit but uh those guys run hot and heavy and they go quick and so i was just trying to save the car and preserve the leak you know you got a power ride in this thing power glide yep is your first time out with this car no we did some passes at bmp before we left which went so as soon as we got here i overnighted a circle d converter it's a great band and we put it up on that portable hoist yeah and dropped the put the new converter in i guess the most important question is does it make you happy oh dude it's so fun that's all it matters you look like you've been working hard not really it's just really hot out here overall really hot i'm pretty much going to sit in my air conditioned hotel room all day which is probably why i look so hot yeah you just haven't adapted yet yeah you come outside oh man this is terrible this is miserable what are you looking at chad you got some tape this is famous derrick tape from my from my older brother yeah doppelganger yeah what is this i don't i don't see this we have black hats hair that flips out and facial hair i don't i don't know where it goes everybody i get compared to i got compared to borat in the comments yesterday so i don't i don't i don't think people really have their heads on straight it's your stash do they let you through tech with your stash that's the only reason i got through tech oh they just went they were like you have so many problems but you know i'm too distracted yeah stash…

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