Not Ranked
While not apples to apples, the only supercharger conversions that I've done have been Toyota Tacoma 6 cylinders (a 3.4L and a 4L). That being said the SCs were TRD twisted roots types and were slapped on the stock engines with the install kits which included larger injectors and a new computer. Power boost was supposed to be 30%, I don't know because I never put either on a dyno. I can say that the seat-of-pants difference was astounding. The 3.6L I traded in with 156k miles on it and the 4L I traded in with over 170k on it and both were still running great, not even any smoking.
The point is, as Jus points out, for limited boost applications then the stock engine is fine for most modern engines. The inverse of that is that going over board with boost can turn that same engine into a grenade.
I think we all get that guys.
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