steadfastWRX

Had my catless downpipe installed last week with TP stage 2. Runs great feels good datalogs a came out ok. Curious if you guys have a slight bpv sound when you shift inid rpm say 3,000 I hear a slight *pew*. I only notice it when I'm driving by something that echos at me. Doesn't make that sound under boost only light throttle. Is this normal? I've checkedy tb to ic hose and it's fine I had it replaced with an after market due to the stock one eating itself.

Mosnowbro

Yes