BOV release while on throttle

alectoparty · 04-22-2016, 08:42 PM

I bought a 2008 135i AT and it had an aftermarket BOV on it. When I really get on the throttle it it starts purging pressure and whistling, is this normal? Can I use a boost controller to regulate this?

AntonioZ · 04-23-2016, 11:38 PM

What other mods do you have on the car? Did it throw any codes? My thinking is its just the sucking of the turbos being a lot louder now that you have an aftermarket chargepipe.

Jeff@TopGearSolutions · 04-24-2016, 01:11 PM

What kind of BOV? The issue won't be a need for a boost controller.

Might be the spring in the BOV.

04-22-2016, 08:42 PM	#1
alectoparty New Member 0 Rep 17 Posts Drives: 135i coupe Join Date: Sep 2015 Location: Fort Wayne, IN iTrader: (0)	BOV release while on throttle I bought a 2008 135i AT and it had an aftermarket BOV on it. When I really get on the throttle it it starts purging pressure and whistling, is this normal? Can I use a boost controller to regulate this?
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04-23-2016, 11:38 PM	#2
AntonioZ Second Lieutenant 33 Rep 208 Posts Drives: 2008 135i Crimson Join Date: Dec 2014 Location: Portland, OR iTrader: (0)	What other mods do you have on the car? Did it throw any codes? My thinking is its just the sucking of the turbos being a lot louder now that you have an aftermarket chargepipe.
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04-24-2016, 01:11 PM	#3
Jeff@TopGearSolutions 3441 Rep 79,212 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	What kind of BOV? The issue won't be a need for a boost controller. Might be the spring in the BOV.
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