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Boosting for More Power

8:41
15:31
24.7K views

At 8:41 in

LSXcalade Hits The Dyno: Makes INSANE HP at PFI Speed! (8,000 RPM Twin Turbo LSX 427)

What happens here

With the Escalade already at 1492 horsepower, the team aims for further gains. They acknowledge the impressive performance given the high density altitude (DA) of 8791 feet, which typically reduces engine power. To increase boost, they adjust the wastegate duty cycle. The third dyno pull is performed. The powerful exhaust notes cause a nearby garage door to visibly open. The results show a new peak power of 1650.64 horsepower at 131.14 MPH.

Goal: Increase boost and refine the power delivery to achieve even higher horsepower.

Tools and materials

  • Cadillac Escalade GM — Vehicle being tested
  • Dynamometer Dynojet — Measuring engine output
  • Laptop with Tuning Software — Adjusting engine tuning parameters (e.g., wastegate duty cycle)
  • Safety Earmuffs 3M — Protecting hearing

What they say

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did it push the door open you guys are rattling my toolbox over there the exhaust is way up here and it pushed that door open the rest of the way yeah what a ride brent wanted to put a light under here when we had the camera down there i'm like that's not a good idea that is some exhaust pressure down there how'd everything look fuel wise oh beautiful really yeah the tunes on the money on that stuff that's crazy because this has almost no like literally one tank of e85 up the highway down the highway that's all the more timing and everything that's gotten in it has been just consistent on the same path every time 23.23 pounds and then when i let off it was still at 22. oh cool yeah so what what rpm was it at 23 pounds at 23 pounds was at 60 66 600. that's not even doing anything yet yeah dang that's like when i shift it's like down there let off at seven thousand cause i figured you like you said it's just following anyway so yeah what's the point we're getting the number there we just yeah we're doing it for the gram anymore and i still went 174 miles an hour according to this so 23 pounds it was at like 22 point something so not even a full pound increase made 40 horsepower yeah so this thing's still well within its efficiency range yeah it's awesome this is great this is great man good job thank you you put it together really good parts and it shows like this is this is excellent i mean i was just like the the general contractor on this engine stuff like i just did my research and picked the right people to specialize in the right components to point me in the right direction i just made the pipes and wired things ignition timing was 13.8 that's it that's it nothing nothing at all i almost wonder like how's that even possible make that much power on 23 pounds of boost this thing has to be moving air so effortlessly a ton of air a lot of air so you think we should uh give it a little more and see if we can

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