I just got a Procharger Pro-Flo BPV for my 8# P1SC F-body which I think comes standard with the D1SC kit.
http://www.procharger.com/store/inde...lo&act=viewCat

I currently have the stock unit installed and I am pretty sure that it is stock for the P1SC. When under vacumm, it will open all the way up. The Pro Flo under vacumm is adjusted so that it will only open a third of the way.

My question is, what is the purpose of having an adjuster that limits the travel of the butterfly? Obviously it will only will effect the bypassing when the vehicle is not at WOT.

Where do I adjust it to?

Do I set it so that it opens all the way up?

Will partial opening create more noise and surge?



Thanks

 

I have the red race bypass and I have used the adjustment to make it close completely. Don't know if they do the same thing (your vs mine) but mine is open prety far when in vacume and when you pull the vac line while in idle you should not feel any air comming out of the bypass. http://mycarpics.shutterfly.com/219

 

Sounds to me like you are refering to a blow off valve and not a bypass valve?

 

What I have is a bypass NOT a blowoff.

 

Then how do you feel air coming out of it?

 

When the car is running in idle the engine is in vacume and the bypass is open blowing the boosted air to the atmosphere. I dont have my bypass going back to the head unit. So when you are putting yours on leave the hose to the blower hat off. Start your car and put your hand over the hose. You should feel alot of air blowing out. Then take the vacume line going to the bypass and pull it off. This should close the bypass and you should feel no air comming out. If you do that is why you have the adjustment nut your asking about. This is what I put my hand over to feel the air comming out... See attach file.

 

O.K., now I kind of understand what you are doing but why are you venting to atmosphere? Why not recirulate?

I didn't know that Procharger makes a BPV like you have.

 

Yup its the race bypass for 10+ #'s off boost. I didn't run it back to the head unit because I did not want to mess with the plumbing back to the blower hat, I like the pshhh sound it makes when I shift gears and I dont want to put hot air back in to the blower.