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#9: 08-27-2012, 05:57 PM
LegacyDan's Avatar
Title: #SoJDMyo
Location: Ireland
Car: Stage 3.5 Jdm 2.0GT TD05-20G twin scroll
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Originally Posted by cryo View Post
The Factory by pass valve is very capable of stage 1 and stage 2 levels and rarely presents any mechanical failures. After 18psi some have showed signs of leaking where as others have held 22-23psi daily for years with no signs of failure. Most wait untill they fail to replace them and is good practice in my opinion. There are a few aftermarket units that perform like stock and are of much better design so those can be great replacements if your stock unit does fail. Normally “tuning” the bpv/bov consists of adjustment of different springs for pressure.
Which aftermarket BOV's do you have positive experience, My current tune has me on about 20-21psi im not sure how well stock one currently performs.

I'll be in touch about etune after i get my fueling mods in and see what you can do with it maybe!