2002 non egr isx 500 cm570 - turbo question

[Rig Wrench]

(03-01-2017 )ktbtrucking Wrote:  helo all,
have a truck with I believe cm570. It is isx 500 non egr isx. My boost gauge is from 0 to 30max.
Checked it on insite had 18psi max a little more than a half on the gauge. . My other truck cm870 have around 34max psi and the gauge is from 0 to 45.Just curious. Any thoughts regarding this. As far as I read over in the past it is hard to "kill" the turbo on cm 570 because it just spin but is not as efficient as should be. It is non Vgt turbo.
Thank you

Sounds like a boost leak. Idk what your normal boost should be, but 18psi seems too low regardless. Make sure wastegate isn't opening too soon either. I'm GUESSING you should be in the 32-36 psi range. That 570 may not hold the reputation as mpg king, but in proper condition is a great engine with many profitable miles in it