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Car feels like it’s slow to build boost

Firehawk67

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Location
St. Louis, MO, USA
#1
Lately my car feels like it’s slow to reach full boost. It’s a ‘19 ST with a CPE delta core IC, k&n drop in filter, colder plugs, and a Panda tune. The car used to “hit” pretty hard when I gave it the beans but lately I’m not getting that feeling. Pulls like a N/A car. My Accessport shows that my air/fuel ratio is fine, car still reaches peak boost (~26 psi), and mpg hasn’t changed. Oil looks fine. No codes.
I’m just not sure what to look for as this is my first turbo car. Like how often should you change plugs in a boosted application? Current set has roughly 50k miles on them. What else should I be looking at?
 




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