I used to have a blow through on my STI big turbo kit, it worked soo much better than the original MAF setup..

that was because you were most likely running a big blow off valve and everytime it opened you screwed up your AFR by exhausting the metered air

My Audi TT used a recirculating diverter valve to keep unused air in the system to keep boost up (good for STS too?), and not blow it out into the atmosphere. Is this a viable option for SCs?

Open-atmosphere BOVs sound so cool, though, haha!

I share the same feelings about the engineering that went into the kit. The fact Stillen even went to CAD to design their intake manifold shows their attention to detail.

Anyways, I hope to see some up close and personal pictures of the kit on a 370Z soon!

I would like to answer this question however, due to the obviously competitive nature of this subject I am going to have to respectfully acknowledge your question but answer it indirectly.

Blow off valves will be an option for the supercharger system however, as 1slow370 pointed out it can cause the afr's to jump crazy rich because you are releasing metered air that you are taking away from the engine. Therefore the engine will supply the appropriate amount of fuel for that amount of air but since you've released it you will be extremely rich. This can actually cause the car to stall at low speed. Which is why we will be offering a dual stage re-circ/blow-off valve. It will be an option.

There is more to this explanation as well but again...We aren't ready to release more info. yet.

most low pressure centrifugal setups won't even need a blow off valve which is why it is good that it's optional. They come in handy though on bigger setups but you would just recirculate it from the compressor tube back to the inlet tube after the MAF which would force the air being sucked into the sensor to stand still leaning out the fuel tune

Hey man you need to fix your avatar, the sliders dont work.:yum:

Hahaaa, he prolly did that on purpose.

lol.. I've been trying to use the damn scroll feature on his avatar all day!! j/k

Kyle I know you said your not ready to go into more detail yet, but I want to hear your explanation on the BOV's. I love the sound of them but have heard a lot of comments about running rich. I am sure someone else can answer this too, but is it really a big concern? Rich is better than lean as far as engine life is concerned correct? Is it merely a problem with running rich and stalling out or can the problem go further than that?

Anyone?

You will like our optional dual stage blow off valves. At low speed, cruising through a parking lot or something, they act as a re-circulating system. But, at high speed like when you're actually driving, they will vent to atmosphere. There is no concern about stalling or anything when driving at high speed because it happens so quickly it's only when you're going slow that the loss of air and excessive fuel can cause the car to stumble and potentially stall.

It would basically be like if you took a breath of air and there was a valve opening up in your throat before it got to your lungs...It would cause you to stumble and fall...

That is a pretty good analogy.:rofl2:

Ya, my damn valve just didn't open right in my throat and I bout choked on my Mt. Dew.. I think I'm with you!

I like what your sayin about the dual stage (sounds nice)....Sign me up!! I can't freakin wait to pull the trigger on one of these bad boys!

Damn, Im gonna miss my SSQV. Is the dual stage external vent a tweet or a sneeze? Not that it makes a difference, but the little ricer in me is wondering :)

lol I'm right there with you RCZ... I'm trying not to be "that guy" but damn I want it to freakin blow the dust off the road when I shift!