To keep it simple & accesible, I'd say go with a DFI (Gen 8 coming out soon...LOTS of features), or a FAST setup. MS, VEMS, Holley, etc can all do the job- but they don't quite have the deep LS1 support yet (some will undoubtedly argue that). There are other systems out there- but I have more experience with the DFI & FAST on LSx engines.
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