Hello rx7,

I just had Tial BOV installed on my car but wasn't sure what is correct spring for my car.

 

http://www.tialmedia.com/documents/w3_tial_bov50_sp.pdf

 

those things cost like $50, I just trimmed my spring till it opened the way I wanted it to. Worked fine and cost nothing.

 

I had to go down to the 7 lb spring because I was getting surge with the 11lb. I only paid like $17, who's charging you $50?

 

I think I looked it up on Ebay, where did you get yours?

I cut like 1.5 or 2 coils off mine and I still dont think its right. WOT shifts and it seams to open alright, but it seams to open faster when I come off of part throttle, which tells me that vacuum is not building fast enough. It also sounds a lot better off part throttle.

I think I'm going to cut another coil off.