Powerplants > LT# & LS#

aftermarket tuning device

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firethorn:
Anybody tried any of the aftermarket tuning plug ins and did they work as stated?

jonathonar89:
The biggest thing right now is Holley.  I have their Terminator kit but I have not operated it yet.  Many have good experience with Holley though.

My choices on LS is GM, Holley EFI or Carburetor (Daytona Sensors).

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