C15 not getting boost

Fuel pressure gauge would tell you this in seconds.

 

The computer doesn't read fuel pressure, so you know

 

belive it or not. a fuel pressure gauge may not show a problem with a restricted line. I have had collapsed fuel lines on trucks and showed full pressure before. you have to understand that with the truck sitting still and not on a pull it isn't going to demand the same amount of fuel and still show the right pressure. it might but I doubt it. the best way to see is to hook up a gauge and hang it where you can see it running down the road and go for a drive.

 

That's how I told him to mount it when I posted it. Along with a boost gauge

 

Bump. Any update?