My cruiser has list uts mojo

[prairiecruiser1]

I have a 1hz with 220km and up till now never missed a beat. Lately it's been acting up. Runs and pulls strong in all 5 gears but when she hits about 2400 to 2600 rpm it caught and spits like a sick mule. All filters are new and my turbo is spooling up with no problems. I have never done injectors or touched the pump. Any ideas?

 

[Hulsty]

Check to see if the air intake is collapsing under boost.

 

[prairiecruiser1]

Only 2 short 21/2 inch 90s and a huge intercooler so I think I'm good on that one