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Discussion Starter · #1 ·
Hey there! First post here. I have a 2017 focus st. Two nights ago I put on a blowoff valve (turbosmart) drove that night worked fine. Drove the next day all was fine then. Drove this morning still fine. Went for a drive again today (first time on a highway, but not my first time getting to highway speeds) and now when I build to 8lbs of boost I get a really rough popping noise from my car and it bogs down. I’ve taken my blow off valve off since made sure everything was right and it was.
mod list
AWE Track exhaust
Megan Racing Catless downpipe
K&N air filter
COBB OTS Stage 2 tune
Turbosmart Blowoff valve.
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