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Is it always necessary to to have a recirculating blow off valve on a MAF system? If so, is there any way around this so that I can use an Atmospheric one?
You need a twin chamber BOV, like the Apexi, for example. It has two chambers with a valve that can close while still allowing for appropriate pressure dump after boosting. I had this problem for months and I couldn't figure out why I was misfiring and idling lumpy ( or dying at idle!). The TC BOV solved this problem immediately.
Linear Mode
