Let me know what you guys would like to see...

 

What?? More info would be nice......

 

With a SC....ummm you gotta vent it ! lol I dont know how much of a difference it makes...do you ? If it does at all .

 

Im cofused

 

he is talking about a bypass BOV . recerculating it would be more quiet . If it hurts or helps performance any , I dont know

 

from my understanding (and i can be wrong so just say so if i am) but with the 350z or any other n/a ride that you turbo it really doesn't make a differance due to the fact that it has to be tuned either way; however, with a stock turbo car such as a sti, evo, jetta/gti 1.8t its better to have a recerculation bov simply for the fact that stock they come with a diverter valve and is tuned to for the extra air dumped back into the intake. Granted you see people with these cars running bov's all day long. its just been in my experiance that if you through a bov those cars you throw a cel because the a/f is off....but thats just me

 

If your retaining the factory MAF you'll want to recirculate because the computer accounts for the air and thus adds the fuel for it, but if you dont recirculate it will cause the motor to run rich and backfire etc when you let off the throttle.

I ran an un-recirculated bov for years simply because I like the sound and could really care less if it backfired a bit.

I dont think it really hurts performance any besides maybe causing it to be a little rich in between shifts but unless your making a full out race car I cant see how that would be a problem.

 

If you have the bov before the MAF it doesnt make a difference . The MAF never sees the air . He is talking about a Supercharger bypass bov . Not a turbo car

 

Listen I have a turbo car, you have to recircle it (talking about performance). If you want the sound and look "cool", then vent it. Performance always matters more.....

 

as stated above,...............if the maf is a Blow-through setup (after the turbos), you don't need to recirculate as long as the BOV is located before the MAF..

 

That is true, but most setups are not like this...

 

The answer is simple, How many oem turbo cars do you see with Re-circulation valve vs. oem turbo cars with a vented valve? Mostly re-circulated.

 

There are a number of SC setups that are using recirc, just not our cars. It has nothing to do with sound as I don't care at all about the sound since my project is about quality made parts of a unique design and performance orientated (obvioulsy there will still be some compromises).

Since I am using blow through for the MAF it is not a matter of using it to keep the A/F in check. Maybe there is no benefit in doing so.

 

true, but most turbo and SC kits for the Z/G are blow-thru setups where you can use a vented BOV.

Only the JWT TT and the Stillen are draw-thru. I am not sure of the HKS Rotrex SC, though.

Vortech, ATI Procharger, Greddy TT, APS TT, APS ST, Turbonetics ST, SFR TT.......these are all blow-thru MAF setups where an open BOV works best!!!

realizing that the originator of this thread has recently started producing parts just for the Z33 Zs, I assume that he is interesting in making a product that works great with the Z....not caring as much as how is works on other cars. That's why the open BOV is probably in his best interest. plus, Open BOVs are part of what makes people loves forced induction setups.

 

Hmmm...I thought the poll was about wastegate dumps? If thats the case, I like the sound of my open dumps...

 

haha thats what i thought too, and i also like the sound of my open dumps...

 

Why are people chiming in about turbo setups? The SC is setup different. The unit on the Vortech is a bypass valve, not a BOV. Recirculation will not change power whatsoever.

 

God this thread makes me LAWL

 

Bypass, blow-offf...there really not much difference. The main difference is that vortech uses a much lighter spring pressure so that the valve opens up with only vaccum( no pressure in the pipes needed).......several BOVs are open under vaccum, too.....the TN raptor comes to mind. My Greddy RS also is open under vaccum, but I changed it from a dual spring to a single spring.

 

The only issue I see with that is that the people who have tried anything but the stock bov on the vortech have had less than successful results.