They offer different springs per their bov's.

What do I need to know in order to fit the correct spring?

Thanks in advance

 

engine vac at idle.

 

I don't have a pressure gauge hooked up yet on the car.

Does it need to be exact?

 

if not the valve will be a little open at idle thats all.

 

we are talking about the q. im not 100 % sure on that. but on the old one thats what the different springs were for.

 

Yea, Q. I figured if I am going to buy one, might as well get the New & Improved..lol.

 

Most Hondas will use a 7psi spring which should open at around 16" of vac. Most honda pull around 18-22" at idle so that should work well. I had a Tial BOV I think it was an 11psi spring and it opened at 26" of vac and it never opened on the car.

Tial has a chart on there site that give the complete listing.

 

I just spoke with a reliable source that said 11psi should be what I want.

 

I dont think an 11psi spring will open. Good luck

 

it really dosnt matter if the bov is open at idle..

the 7psi spring will open sooner, the 11psi spring will open later. either one will "work"

 

Is it 7 or 11? Anything in between?

 

11psi is fine its what ive used on my gsr