sorry bout the noobyness

i’ve searched around the site a bit looking for an answer but no luck/ maybe someone can help. probly been saked and answered a million times. how much boost can a bone stock sr20det take?

thanks

20 psi on a gt2871r is the limit for stock injectors

k thanks

It’s actually debatable. If you run an adjustable FPR such as a Nismo/Tomei or Sard one, you can push about 22 psi on a gt2871r. It’s all about tuning. This is on stock injectors still btw.

Yeah, but then you’re trying to compensate for flow by increasing the pressure, and while it’ll work, it’s not really the best idea…

is gt2871r what the factory turbo is called? sorry im new to this

No the factory turbo on an S13 SR is a T25, S14/S15 is a T28. GT2871R is one of the most popular upgrade turbos. (pst, research)

sorry, so the most boost on a T25 turbo is?

around 12-14. Any higher and your just going past the efficiency range.

k thanks

why would you run 22psi on a GT2871R with stock injectors?

you should be at 400whp with that kind of boost on a .64… has anyone ever put 400whp out of stock SR injectors?