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Just got my 2024 Denali Ultimate yesterday. 

just curious if anyone knows if its ok to run the derringer from my 2020 on the new truck?

when the 2020 came out i know several people had no issues on what was the new 2020 from a previous gen duramax

from what i know i am pretty sure the idash can read the obd2 just fine.

and from what i understand the derringer basically lies to the ecu changing the fuel rail pressure value and the manifold pressure data so basically the truck wont really know it is there.

i can already tell the new L5P has a significant sharper kick in boost once it kicks in. still has the same turbo lag through most of 2nd gear but once it shifts to 3rd it hits pretty hard and abruptly. i feel like this is due to the revised faster vane servo and added HP

i cannot imagine what the derringer will add to that.

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