When I get on the highway and floor it in 3rd through 6th I can hear this funny noise it kinda sounds like air being sucked in the only mod I have is a hks carbon ti cat-back and thats it. oh and it's an 05 sti.

Could this be from a loose intercooler hose also it seems that I'm not hit peak boost. I have the factory option boost gauge an the highest boost I get according to that it just below 1 bar.

Thanks for any help.

 

I didn't have any thing in the car but me. It might be the fact that I getting used to the car now and its just one of the little nueanses of it. I hope some one with experiance will chime in and say some thing.