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Stock R33 Boost Questions 

2 replies to this topic

#1 FURBY

  • Joined:29-December 04
  • Location:Australia SA
  • Car:Lada

Posted 11 April 2009 - 01:54 PM

Ok here is the situation

Have a Series 2 R33 only power mod is 3 inch dump and straight through to JunBL box.

What is the factory boost on a stock setup? Should be a bit more because of the dump.

Second question is what is the actuator pressure on a Rb25 turbo?

Now is it possible to remove the boost restrictor safely and run a constant say 12ish pounds?

I have done this before on a 32 GTR and run it off the actuator pressure and it runs a constant 1 bar of boost all the time but wondering if it will work on a RB25?

Cheers Furbinator

#2 Damit

  • Joined:24-June 08
  • Location:Australia QLD
  • Car:R33 & RB25 180SX

Posted 13 April 2009 - 11:19 PM

View PostFURBY, on Apr 11 2009, 02:37 PM, said:

Ok here is the situation

Have a Series 2 R33 only power mod is 3 inch dump and straight through to JunBL box.

What is the factory boost on a stock setup? Should be a bit more because of the dump.

Second question is what is the actuator pressure on a Rb25 turbo?

Now is it possible to remove the boost restrictor safely and run a constant say 12ish pounds?

I have done this before on a 32 GTR and run it off the actuator pressure and it runs a constant 1 bar of boost all the time but wondering if it will work on a RB25?

Cheers Furbinator

factory boost is 5 Psi to 4.5k than 7

hmm i know when my EBC wasnt working it ran at about 7-8 PSI so i assume that's what it will run at and i have Front mount and 3 inch exhaust as well

#3 Basti

  • Joined:02-September 06
  • Location:Australia VIC

Posted 06 May 2009 - 03:17 AM

rb25 actuator is 5psi - your "low boost". it is then solenoid controlled to 7psi - "high boost". if you want more, try the rb20 actuator which is a 10psi thang use it without the solenoid. with your dump and zorst and stuff you should be running approx 9psi anyway





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