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There are many Bov available . Some are piston based and some are diaphragm based . The stock units are diaphragm based to reduce the size of the units. I would suggest finding the location of the stock units and measuring the take off hose . Then you can pair up the Bov according to the size of the hose .
Turbo smart , Tial , Hks , even some cheap ebay units do a pretty good job. Make sure you position the BOV away from the turbo's or near the exhaust manifolds. Sometimes the Bov releases oil residue from the turbo's so it will ignite near a strong heat source .
I would start at finding the size first then work out which manufactures support the hose size . If it's a 2 bolt design , then you may need to fabricate an attachment to the new Bov .
I would recommend a AFR gauge before WOT when changing the exhaust setup . Look at AEM solution , wireless solution and uses your mobile phone as gauge.
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