I've noticed lately my car isn't pulling 15psi anymore when I bought it from a used car dealership it was pulling 15psi. I'm not quite sure what's done to the car all I know from looking is thag it has a 3.0" pully different full injectors zzp down pipe 3" to an exit of 2.5. But I haven't done anything to is do if you have any idea why I've lost 5psi it's not a lot but you can definitely feel the difference and feels kinda slower

 

99 degrees yesterday and our altitude.....

 

would that really cause loss of boost. I've never thought it could be the heat and yeah I know the altitude but here in Colorado it was running 15psi when I got till lately it stopped pulling 15 only 10 now

 

Even with the 3" pulley, 15 would have been fantastic for a SC here. It's suppose to cool down 30 degrees Saturday, 20 Friday. See what it does then.

 

I'd bet it was because the car has built in safety measures for high IATs

 

Get up early (~6-7am) and go do a pull and see what your boost is.

 

 

What are IATs? I think I know but im not to sure. If the ic pump is going out or is bad would that have to deal with it

 

Intake Air Temps... The above pic doesn't exactly apply to yours but gives you an idea of what can lower your boost.
I haven't seen defaults for so long i don't know how low they are.

 

I forget what the default is, but I want to say it's around 70-80% of commanded so 11-12ish.

It could also be a bypass valve issue.

 

I'm in Parker... If you want to swing by this weekend I can use HP Tuner to see where your settings are and check your bypass valve for leaks.