Vent BOV to atmosphere w/ MAF driven ems
Just curious if anyone is venting there blow off valve to atmosphere with a mass air flow driven engine management system? I know with dsms if you try it will run like complete ----. Just curious if the car runs ok and doesnt throw a CEL like that. I would assume the car would get some type of mass air flow code or system rich code.
thanks |
Re: Vent BOV to atmosphere w/ MAF driven ems
It's weird how every maf system is different because my buddy with an STI vents his without any probs unless Subies don't use maf sensors.
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Re: Vent BOV to atmosphere w/ MAF driven ems
i thought there BOV's where different thou
Like they had two vaccuum sources or two of something ??? |
Re: Vent BOV to atmosphere w/ MAF driven ems
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Re: Vent BOV to atmosphere w/ MAF driven ems
Originally Posted by AbaZ
Just curious if anyone is venting there blow off valve to atmosphere with a mass air flow driven engine management system? I know with dsms if you try it will run like complete ----. Just curious if the car runs ok and doesnt throw a CEL like that. I would assume the car would get some type of mass air flow code or system rich code.
thanks Unless the MAF is set up as a blow through, then it does'nt matter. |
Re: Vent BOV to atmosphere w/ MAF driven ems
1.8t's do ok but if you look at the value blocks in VAG-COM you can see the jump in A/F
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Re: Vent BOV to atmosphere w/ MAF driven ems
If the BOV is open while in vacuum, the are is going into your engine thats not being measured by the MAF so youll run lean.
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Re: Vent BOV to atmosphere w/ MAF driven ems
Was just talking to my roommate about this today. He runs un-recirc'd on his subaru... but it isn't tuned of a MAF. It uses the Utec to tune off other settings, so the circ/recirc doesn't change anything.
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Re: Vent BOV to atmosphere w/ MAF driven ems
hmm this is what I was afraid of, the dsm bov is definatly not strong enough to stay shut at idle so I think its definatly going to throw a code. Greatttttttttttttttttttttt, just more ------- plumbing I have to do >:(
I'm done turboing cars |
Re: Vent BOV to atmosphere w/ MAF driven ems
I ran the BOV venting to the atmosphere on my probe, I just set the MAF sensor up so that it was right before the throttle body and after the BOV. It worked great set up as a blow through design when I used an safc with it ;).
BTW: I knew a guy who ran it as a draw through design like factory but then he changed it to a blow through setup and said that it felt alot better and thought it had alot more power, also I never got a CEL with that setup ;D. |
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