[THaskins]

What's everyone's favorite sounding blow off valve? Is anyone thinking about adding one to their Z build down the line? I haven't had one on any of my cars before but I've always liked the sound and how much fun people have with them.

 

[because_murica]

HKS is a the crowd favorite for the VR30. I like it as well, though may use a Tial setup instead.

BOVs are, in my opinion, necessary for the VR30 as it doesn't come with any kind of BOV or re-circulation system from factory (from what I recall).

 

[MCN1SMO]

BOVs are, in my opinion, necessary for the VR30 as it doesn't come with any kind of BOV or re-circulation system from factory (from what I recall).

I actually wasnt aware of this as I always just assumed they were recirculated like the VR38.

 

[because_murica]

I actually wasnt aware of this as I always just assumed they were recirculated like the VR38.

It should absolutely be that way from the factory, yes. But, if memory serves, unfortunately, the VR30 has no re-circulation system. So, once you left off the gas, that boost pressure goes back to the turbine wheels - not good for longevity.

 

[Metal]

From what I've read on the Q forums, the way the VR30 deals with boost pressure release is having the throttle plate & wastegate close progressively and stay slightly open upon removing throttle input until the pressure is released. This would work (although I think it's pretty silly engineering when recirc valves exist) to prevent extra wear on the compressor wheels, but a few people have said that they have almost gotten in accidents due to the car not instantly cutting power if they needed to quickly react on the brakes from a state of having the throttle mostly open

 

[because_murica]

From what I've read on the Q forums, the way the VR30 deals with boost pressure release is having the throttle plate & wastegate close progressively and stay slightly open upon removing throttle input until the pressure is released. This would work (although I think it's pretty silly engineering when recirc valves exist) to prevent extra wear on the compressor wheels, but a few people have said that they have almost gotten in accidents due to the car not instantly cutting power if they needed to quickly react on the brakes from a state of having the throttle mostly open

That's pretty wild. One of the benefits of a manual transmission, just kick that clutch in.

 

[Metal]

That's pretty wild. One of the benefits of a manual transmission, just kick that clutch in.

Right, I'm going to get a manual anyways, and I think I'm gonna get BOV's just because I've always wanted the wooshy air noises. A big topic of debate is whether or not you need to get a tune after installing them because the VR30 uses a MAF

 

[because_murica]

Right, I'm going to get a manual anyways, and I think I'm gonna get BOV's just because I've always wanted the wooshy air noises. A big topic of debate is whether or not you need to get a tune after installing them because the VR30 uses a MAF

+1

 

[THaskins]

Right, I'm going to get a manual anyways, and I think I'm gonna get BOV's just because I've always wanted the wooshy air noises. A big topic of debate is whether or not you need to get a tune after installing them because the VR30 uses a MAF

+1

Who doesn't love a good wooosh once and a while 🤣

 

[Rusty]

HKS is a the crowd favorite for the VR30. I like it as well, though may use a Tial setup instead.

BOVs are, in my opinion, necessary for the VR30 as it doesn't come with any kind of BOV or re-circulation system from factory (from what I recall).

Are there other ones that work well with the engine or HKS the way to go?

 

[Metal]

Concept Z performance sells a kit with the Turbosmart Vee port BOV's and a couple Q owners have them and have said they're a bit "smoother/more subtle" sounding compared to the HKS.