I have heard you could mod the stock top mount bov. This is the factory diverted valve that has been modified to recirculat plus vent to the atmosphere.
Bov Blow Off Valve Subaru Faq Subaru Idiots
Stock wrx bov mod. The easiest way to tap into the vacuum lines is right before the blow off valve and is where the stock boost gauge is tied in at also however if you are installing a new gauge and had the stock gauge installed already simply tap into. 291 blow off valve 292 turbo timers 30 transmission 31 sti 6 speed 40 suspension 41 springs. For this reason many wrx owners choose to stick with the stock turbocharger for as long as possible and increase the boost through tuning or an aftermarket boost controller. It seems that most people have said stick with the stock bov because it will keep the turbo from having problems later on and install a short ram if you want the whoosh soundis it true you can mod the stock one. Mod update 6 grimmspeed aos install duration. Refurbishing lathe chucks duration.
But by no means healthier. A bov is a reliability mod not a performance mod. There was a post on an audi forum last year where a guy used a vag com to plot boost requested vs boost delivered over time through several runs up through the gears. So its obvious that an aftermarket bov holds more boost than a stock bov. Stock wrx bov with no recirc. Stock wrx bov with no recirc.
Upgraded bpvbov although a larger turbocharger is an awesome mod its fairly expensive. Skip navigation sign in. Top 5 subaru wrx blow off valves duration. Ive read mixed reviews about the recirculating bov being safe but its not worth taking the risk on a stock tune imo. But looking at the 016 bov mod is there any reason to go with an aftermarket unit for 19984 more. Im a sucker for the pshhhh as well.
2012 subaru wrx hatch. Mods with cris 21319 views. This will not throw any check engine lights or cause any shuttersstalling. He tested the original stock valves vs upgraded stock replacements vs several high end machined from billet valves. Sent from my sm g935v using tapatalk. Not a difficult mod at all once youre past warranty.
Still stock 04 sti 04 wrx. I will make a how to. Im asking because im moving from a 20g xt r on 93 octane at 21psi about the limit of stock from what i can find to a gt2860rs on e85 and expecting to be pushing. Just pick a good tuner.