Does anyone know what the threshold for reliability of the IS38 is at? Im thinking 28psi is about as good as it gets. Over that things might pop? Will better fueling help in anyway though?
IS38 can even pop on stock boost. For the most part you can push it more vs IS20. I would say 26 psi would be my personal max cap for the IS38, but either way I don't see more then 24 psi and maybe 25 if I'm lucky peak even with boost set higher.