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BOV or VTA mod?

Messages
58
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20
Location
California
#1
Has anyone stumbled across a viable BOV or legit VTA mod for the ST yet? I want some audible turbo noise.
 

lacartus

New Member
Messages
17
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7
Location
US
#2
Maybe try an open cone filter (no air box)? That gives the compressor whistle in the pickups. I wouldn’t do a VTA with MAF (vs MAS) since it will run rich (adding fuel where it thinks there is air) and soot will build-up.


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Last edited:
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30
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Baton Rouge, LA, USA
#3
I would wait for a company to release an intake, I'm sure that will make it louder. I've seen a couple of F150 guys do the VTA mod but it looks horrible.
 
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Location
California
#4
I haven’t really heard anything negative from a vta mod on any platform. It’s just for the sound. Is there any proof of side effects or performance loss from the vta mod?
On another note, an open air box cone filter actually does have negative performance effects as it’s bringing in hot engine bay air. Factory air boxes actually flow quite well and bring in cooler outside air. Without a tune, an intake is pretty much null and void in my opinion.
 
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Location
California
#5
I either want to do the vta mod (it’s under the hood, I can make it look factory) or an actual aftermarket blow off valve. I’m also having a hard time locating the blow off valve in the first place
 

lacartus

New Member
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7
Location
US
#6
I haven’t really heard anything negative from a vta mod on any platform. It’s just for the sound. Is there any proof of side effects or performance loss from the vta mod?
On another note, an open air box cone filter actually does have negative performance effects as it’s bringing in hot engine bay air. Factory air boxes actually flow quite well and bring in cooler outside air. Without a tune, an intake is pretty much null and void in my opinion.
Most of the walnut blasting jobs we did were for VTA on factory MAF or DIY cone filters that changed the MAF readings. Usually manifests as hesitation or timing loss at WOT. YMMV


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California
#7
I thought I read somewhere that said it’s not a maf? Correct me if I’m wrong.
 

lacartus

New Member
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Location
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#8
I thought I read somewhere that said it’s not a maf? Correct me if I’m wrong.
Looked like the MAF in my Mustang, but I’ll concede I haven’t had it apart and it may very well have a MAS. Just a word of caution to make sure it is properly engineered to maintain accurate AF ratio readings.


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Messages
58
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Location
California
#9
I’m definitely not claiming to know how these vehicles are built, and I know very little about turbo application. But if an after market unit can be installed to vent to atmosphere, why can’t the oem unit do the same? Along with this mod being done on all generations of ecoboost motors and on different platforms as well. Just a thought.
 
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58
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Location
California
#10
I just read that older gen explorers with obviously a different ecoboost motor monitor air speed/volume at the manifold and not on the intake like in a MAF. Could be different for our new ST’s.
 
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