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View Full Version : Question on running a BOV


Boosted08
09-07-2007, 02:03 PM
Is anyone running a BOV and if so does it mess with the tune of the car in any way by not recirculating the air back into the motor?? I know on a draw thru design car with a MAF you have tobypass it back in or it will mess with the A/F
http://www.youtube.com/watch?v=lcIaQOBPCBE&mode=related&search=

I was that there are 2 Bosh bypass valves in the car, are they combing it into one BOV or running 2?

pumpedTSI
10-11-2007, 08:35 AM
bypass valves are preferred over BOV's on a car running MAF's since with a BOV you are dumping metered air that the ECU has calculated/compensated for thus affecting your fuel/air mix ratio............BOV does sound cool on off throttle tho........with MAF stick with bypass plumbed back into intake system.........

samwoo2go
10-19-2007, 04:50 PM
bypass valves are preferred over BOV's on a car running MAF's since with a BOV you are dumping metered air that the ECU has calculated/compensated for thus affecting your fuel/air mix ratio............BOV does sound cool on off throttle tho........with MAF stick with bypass plumbed back into intake system.........

The 335I runs MAP, not MAF, it should be fine.