Quote:
Originally Posted by keinz
Ive heard on some turbo cars that adding a bov is bad, is it the case for the 1M? And how does it sound like
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I have a BOV with the ER pipe on my 135i, and soon to be added to my 1M once I get it. BOV are not detrimental to the n54 engine, we have a MAP sensor instead of a MAF sensor, so we do not lose anything from venting to atmosphere.
That being said, any BOV/Diverter valve with incorrect spring settings can be detrimental due to not opening when needed or opening when it doesn't need to be. Most aftermarket Charge pipe kits for the 135i/1M have already been tested to work with certain springs, and you should not need to worry with a kit like ER's.