what pressure should i expect from my truck the highest i can hit is 20psi at the the test port
and my egt's get to 1100 real quick thanks

 

Stock, the wastegate dumps around 20psi.
Some see 21, myself I see 19.

Stock turbo can do 35psi before it starts heating the air it's compressing, or overspeeds and implodes.

Some have pushed the stock turbo upwards of 40psi with no ill effects though.

To get the hight boost you need two things, more fuel and something to keep the wastegate from opening at 20psi.
Late model auto tranny trucks can't use the elbow included with most fueling boxes,
we must use hardware to keep the wastegate closed, such as the Turbo-Master or a turnbuckle.


phox

 

at what psi will my truck defuel with out a fooler and do my egt's sound ok i hauled 3500 lbs today and had to watch the pyro pretty close i am running a minor programer that adds 50 hp but not realy but it was free. thanks

 

Should be right around 20psi.
Depending on how precise your MAP sensor is, it could be + or - 1 or 2.


phox