JOHN ELLERBE

o1 cummins with twins s300 62/14 and a gt4202 compressor Ind 74.3mm Exd 102mm trim 53 a/r 0.60 turbine wh dim 82.0mm trim 84 a/r 1.15 have egde juice
and smarty 150 hp ddp injectors head studs and fire ring head heilx 2 cam and
valve springs and cooltwist inner cooler. at full throtle only making 45 psi checked for leaks in system have no leaks checked both waste gate set at 65 psi thay are not opening need to no if. I need more fuel or a different lower turbo

Big Blue24

Is the hot pipe externally wastegated or does that garrett turbo have a wastegate built in? Many have complianed about low boost and checked and rechecked their wastegate, but have you tried pinching the silicone line that feeds the wastegate actuator to ensure that it isn't opening a little early? I used vice grips and discoved that my actuator was leaking boost and slightly opening the wastegate.

Where in UT? When I'm in Park City, my boost never goes above 29 psi due to high temp and high elevation. Down here in Provo, I can hit 35 psi no problem.

JOHN ELLERBE

have tried after market boost fittings with small hole in them letting boost psi
out like the one that come in the egde chip
I am now going to take psi reading at each turbo to see how thay are boosting
live in the valley west jordan

Big Blue24

You should fill in your signature so more people will help and give suggestions based on what you have in your truck. Click on top left portion of page "User CP" then fill in your signature line.