ive upgraded my sapph to stage 3,it has a t34 with a .48 housing,i have adjusted the actuator so it just slips over the wastegate arm.it is boosting at 21psi.i was told when i unsuccsessfully had it set up that it should be 15psi for a stage 3 set up.if i adjust it anymore the wastegate will be permanentely open.i have a collins actuator which is brand new,could the spring be too strong?

 

15 psi is pretty much a stage 1. My stage 1 boosts to 18 and holds 16. I would imagine a stage three should be someone in the region of 22 - 24 psi.

 

If you have greens (803s) 21psi peak should be no problem

Steve.

 

T34.48 with 803's on my car, she boosts 21 psi with no probs


Luciano

 

have you got a stage 3 chip?

 

When i had my t3 on i ran it at 26 psi lee,take it to MSD .

 

Cant be bothered going to blackpool,it has an msd stage 3 chip,ava recommended to have the boost at 15 psi,i thought that was a bit low but im not the expert.its still not fast enough so ill maybe get a set of greys next.

 

Mine peaks at 22.7psi at stage 3 setup with a T34 with .48 housing

 

should be around 24psi on stage 3

 

It shouldn't be anything other than what the author of the chip says as he set the fuelling for a certain pressure/psi.
Don't listen to ava, listen to the chip writer, as said most stg 3 around 24/25 psi, but a quick phone call will tell you, you should have got a sheet detailing how much to use boost wise.
tabetha

 

Fair do's,BUT you will get an awesome journey home all probs fixed,why not bell stu and see what he says ?

 

mine was 15 psi at stage 1, like every one is saying stage 3 is 23-25

 

To be sure pm Stu with your chip number and he will tell you what it should be set to

 

forgot about the chip instructions,ill pm stu and ask him,cheers,i never thought of that!

 

The boost pressure should rise to a maximum of 27psi and hold 23psi and NO higher with a 0.48 T34.

This is what's in the instructions from MSD i got
Best to give Stu a call to be be absolute sure