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View Full Version : greddy blow off valve issue


240sxrb25
04-16-2013, 06:36 PM
i have had a greddy rs bov for a few years working well.

lately it has been opening up in boost, venting all charge out. it goes very rich obviously cause the air leaves but fuel keeps dumping. boost drops very much as well.

this is not a missfire of any kind.
i have done a thorough boost leak test and see no major leaks anywhere. the bov has its own dedicated boost/vacuum source. also i had tried adjusting the spring all over the place, even tried the one spring mod but nothing changes.

every once in a while it will hold boost just fine and it rips.


this is a built rb25 neo with a large presicion billet turbo making somewhere around 525-550hp.

thanks