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2020+ GT500 Performance Mods suggestions for increased HP

22K views 51 replies 18 participants last post by  Slither2  
I’ve done extensive dragy testing with my 2020. I did a JLT, then got the car tuned on 93 by PBD.
Just slapping the JLT on did improve performance slightly. With the JLT then the tune, the car is a rocket. Limiter has been raised beyond 8000rpm and it makes power the whole way.

Stock:
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JLT (no tune):
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JLT, 93 Tune (hazing the tires):
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With an awful 60f, I went 10.7 @ 137mph on this setup. 3/4 tank of gas, full weight with a cargo container in the trunk and air compressor, stock PS4S tires. I also weigh 220. That’s a big mph for an intake and tune on pump gas 😁

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Plus, you don’t have to spin the blower any harder and introduce more heat, or deal with the whole pulley swapping!
 

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