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Discussion Starter · #1 ·
hey guys i’m sort of new to the focus st world because i’ve only recently started to get into cars. when i full throttle, my boost guage only goes up to 1/4 (around 7 psi) when it usually or always used to go up to 3/4 (around 20 psi). i looked on here and saw others had this problem and said it was the charge pipe hose but i lifted my car and looked under the felt skid plate thing and my charge pipe was still connected. i do have an aftermarket bov and an after market air filter if that has anything to do with it. i don’t know what the issue is just looking for some help, thanks.
 
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