Anyone installed this?

[Shumax]

https://www.z1motorsports.com/all-s...to-blow-off-valve-conversion-kit-p-52266.html

Anyone installed this? Thoughts?

 

[FSUZ33]

I wouldn’t.
Sound is cool, but not worth the risk imo.
VTA is great for other platforms, including the VR38, but not so much with the VR30. It comes down to MAF vs speed density tuning. The ECU of a VR30 can’t be converted from MAF to speed density.

Aftermarket intake gets you some pretty good spool And blowoff noises.

From Sonictuned: (full post here)
“The two main reasons the VTA BOVs DONT work on these cars is because they are not currently able to be tuned in speed density and even after adding them, any pressure spikes you think you might be limiting, aren’t limited enough or even at all to make a difference in extending the turbo life due to the throttle body logic and how it hesitates closing once more than stock boost is added to the car.”

 

[Durango 95]

Everything I have read about adding BOV to the VR30 is a no go. That Sonictuned article/ blog post Mark wrote seems to lay it out pretty well..

https://www.sonictuned.com/post/blow-off-valves-on-the-vr30-1

 

[HWill]

There are lots running BOV's with no issues. The only issue is it makes tuning a little hard or even impossible for some to perfect. This is why most will tell you to tune then add the BOV.

And I heard that speed density is available or coming really soon.

 

[Shumax]

I wouldn’t.
Sound is cool, but not worth the risk imo.
VTA is great for other platforms, including the VR38, but not so much with the VR30. It comes down to MAF vs speed density tuning. The ECU of a VR30 can’t be converted from MAF to speed density.

Aftermarket intake gets you some pretty good spool And blowoff noises.

From Sonictuned: (full post here)
“The two main reasons the VTA BOVs DONT work on these cars is because they are not currently able to be tuned in speed density and even after adding them, any pressure spikes you think you might be limiting, aren’t limited enough or even at all to make a difference in extending the turbo life due to the throttle body logic and how it hesitates closing once more than stock boost is added to the car.”

I have the Z1 intakes and hear no noise, sadly. Ugh.

 

[KrackaC8]

I have the Z1 intakes and hear no noise, sadly. Ugh.

I get quite a bit of audible feedback from my K&N intakes, as info. The sealed boxes kill a lot of the sound. If you're OK with ingesting some hot engine bay air, you could drill out the dimples on the lids like a few guys have done with the Nismo intakes.

 

[FSUZ33]

I have the Z1 intakes and hear no noise, sadly. Ugh.

Not sure how the Z1 system is set up, but if the filters stay in place with the boxes/covers off, take them off and go for a drive.

 

[jacksonmagnet]

If you're OK with ingesting some hot engine bay air

 

[AlanZ]

I have them. I haven’t experienced any issues. I’ve had them on for about 2.5 years but maybe I shouldn’t count considering I only have 3,800 miles on my Z.

 

[Durango 95]

Those K & N intakes (above) look like a real good value and a sharp look. I ended up getting the AMS 80mm intakes. Sweet intakes but at a higher price. You can definitely hear the turbos spool. You won't get an audio show at the same level you get with BOV but they do sound good. It's AMS so you know it's quality. 80mm really delivers performance and very good HP gains with a proper tune. If you don't tune you can still use them and get the turbo spool sound with the provided sleeve insert. But at that price with no tune it may not deliver the ROI your looking for. Unless you plan to tune down the road. Then they will be ready when you are.

 

[Bluenoser]

Mishimoto intakes give you the best of both worlds. Covers on if you want to keep out warm air and covers off when you want to hear all that wonderful blow off noise

 

[jacksonmagnet]

Mishimoto intakes give you the best of both worlds. Covers on if you want to keep out warm air and covers off when you want to hear all that wonderful blow off noise

Why would you want to keep out warm air?

 

[KrackaC8]

Why would you want to keep out warm air?

Cooler air is denser, denser air allows you to burn more fuel, and thus making more power. This is the same reason we have intercoolers, to cool down the charge air to near-ish ambient temp prior to entering the combustion chamber.

The inlets for the factory air boxes, and many of the aftermarket intakes, draw air from inside the bumper cavity rather than drawing from within the engine bay. Mishimoto is a great option with their convertible/hybrid approach, as is K&N with their boxes that seal up against the hood rather than being an entirely enclosed box (Nismo, AMS, Z1, as examples). AMS & B6A also offer completely exposed open air filters which will perform very well while on the dyno with the hood popped, but in real-world conditions will ingest hot air and stress the heat exchanger/intercoolers more than otherwise necessary decreasing their efficiency..

 

[Shumax]

Good intel - thanks, all!

 

[FSUZ33]

Expert on lubricants AND Charles's Law!?!? Lord have mercy, I'm gettin' the vapors!

Hence the misnomer where aftermarket intakes that breathe air from the engine bay are called "cold air intakes." If they only take in air outside the engine compartment they're legitimately "cold air intakes" like pretty much every OEM intake, I assume. The issues with OEM are typically flow restrictions. A daily driver with a turbo engine that has an efficient charge air cooling system (intercoolers/heat exchangers) it's not a HUGE deal, but when pushing it in hot ambient conditions the cooler the intake air the better.

The B6A intake that @KrackaC8 mentions, and similar intakes are commonly called 'shorty intakes' and are basically just open filters sitting in the engine bay. Many call these 'cold air' but they're actually not.
Z1, AMS, NISMO and Mishimoto are all cold air, but if you remove the covers (if you can on the Z1, not sure) they're a combo, probably pulling in more warm than cold. I drilled the dimples out on my NISMO setup, so mine's technically a "Cold-ish Air Intake"...because I just HAVE to be different.