jakeoster Posted January 22, 2009 Share Posted January 22, 2009 I am going to get rid of the bellow thing that connects your air filter/MAF to the turbo to pipe an fmic. As you know there is piping that connects from the BOV to the bellow. I am going to remove it all and was wondering if I would need to purchase an aftermarket BOV or can you just have the stock one aspirate into the atmosphere. Quote Link to comment Share on other sites More sharing options...
mtnickel Posted January 22, 2009 Share Posted January 22, 2009 You should be able to just vent it to atmosphere yes. But keep in mind that under vacuum the valve will be open. 2 problems here: 1 unfiltered dirty air gets into your engine. You can throw a breather on it though. 2) the extra air is unmetered. So if using MAF still, then you will be running lean. Alternatively, when it actually blows off, you will run very rich. Long story short, MAF systems typically require a recirculation to avoid running issues. But if you've converted to MAP, then go for it! Mark Quote Link to comment Share on other sites More sharing options...
synthtk Posted January 23, 2009 Share Posted January 23, 2009 If you want the car to run the best you should recirculate the BOV if you are running MAFs. Lateron if you switch to a blow through MAF or convert to MAP you can vent without issues. Quote Link to comment Share on other sites More sharing options...
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