I ran mine at 50/50 for awhile and my car seemed to run fine, but it threw off the AFR. That can't be tune that out so I decided to run it at full recirculate. Every once in awhile I run it at 50/50 for a day.
Hi there I noticed your review on the gfb bov and u seem to know quite a bit about it. I just purchased a spec b and I kinda like that sound of the gfb bov but I heard its not good to put a bov on a stock legacy. I'm just wondering if the gfb bov is ok to install on my stock spec b as long as it is set to 50/50 or recirculate? Thanks