Prolly not a bad BOV more like you have a hose off somewhere. Follow the hoses from the turbo to the intake and look for cracks and such. Also make sure all of your hoses are tight where they connect this could cause it. The hissing is a boost leak you just got to find it. And yes the turbo is on the passenger side of the car just follow it from your airbox to the 3000 pipe and hope for the best.
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1987 supra NA 5 speed
1JZGTE swap
Tokico Illumina 2 and Eibach springs
Tokico pillow blocks
Suspension Techniques front and rear sway bar
HKS super dragger cat-back exhaust plus test pipe
Greddy Profec B spec 2 boost controller
HKS type 1 turbo timer
Supra sport solid steel drive shaft
Walboro 255 fuel pump
JZA70 Front end mod
18" Volk Racing AV3 18x8.5 front 18x9.5 rear
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