Couple days ago i removed the "air inlet tube", the big hose from air filter box to the turbo.  The hose has particles I've never seen before.  Wix filter only has about 2800 miles on it.  Many miles from the maintenance schedule "light duty "B" of "inspect/replace every 15,000 miles".  Folding air filter in half, I can see semi loose strands  bewteen the pleats waiting to be sucked in.  About same size of 3 days of no shaving.  

Never noticed it before...

Is this normal?  

 

 

Optimal IAT for daily driver is 100 to 140F. BHAF doesn't change IAT that much being the intercooler can only cool to the outside temp. Once the IAT falls below 80F there is a loss. I see this every day. Start at 32 to 35F in the morning by late morning when I hit Ontario I'm in the 70 to 80F temp range and creeping. Into 100 to 110F IAT and MPG rises quickly from there.

Yes, but as @Mopar1973Man has pointed out many times the location of the IAT sensor on the 2nd gen makes the reading all but useless in terms of figuring out the intake/intercooler location. 

 

After 10 years monitoring intake temps vs pre-turbo temps I can tell you that there is a HUGE difference in air pulled from the engine bay vs the outside air. The intercooler just can’t keep up with massive increases in pre-turbo temps. 

I think those fibers are just dust picked up in the air.

98whitelightin...

Did you look inside air tube to turbo?

 

 

I did not pull it off but did run my fingers down in it and its clean.