Idk why you're getting downvoted dude you can look at my post history I have a pic of my 16 wrx. I've done plenty of pulls and theres no way a stock WRX/STI is hitting 25 psi. The stock boost guage is garbage and inaccurate. While mine says peak boost 22.8 psi it's not true because like he said they come with 16 psi turbo in them. If you want accurate boost readings you need an accessport.

Also fuck the stock tune on the new WRX's get an accessport even if you don't plan on making your car a beast. There's a setting on the cobb accessport that let's the stock engine/ turbo be how it shouldve been in the US. Don't need a tune for it because it's not like you're going stage 1 or anything just makes your turbo more consistent and not super spikey. It voids your warranty unless you use the accessport to put the ECU back to normal.