I've decided to put a bov on my evo ix and wanted to go with the new tial q. And I noticed different sites had different psi springs which would be best for my set up i'm currently full bolt ons and tune. Thanks

 

The springs relation is to idle vacuum. If you have a boost gauge measure the idle vacuum in either in/hg or psi.

The springs are rated in psi so you just divide the in/hg by 2 to get the psi value. Essentially you want a spring strong enough to keep the bov closed but only just strong enough so it doesn't take a huge differential in psi to open it when the psi starts spiking.

List of spring pressures:
- 20 and -21 in/Hg Pink -11 Psi (-22 in/Hg )
- 16 and -19 in/Hg Un-painted -10 Psi (-20 in/Hg )
- 12 and -15 in/Hg White -8 Psi (-16 in/Hg )
- 8 and -11 in/Hg Black -6 Psi (-12 in/Hg

 

What should I get a cat back or a turbo back? I do not want any CEL to be on after I install an exhaust.

 

A turbo back exhaust won't throw a CEL unless you use a test pipe inbetween your downpipe and cat-back sections. That can easily be fixed with one of these though........

http://www.amsperformance.com/cart/A...or-Spacer.html

 

Very well said. I plan on purchasing most bolt ons, and some 272's over the winter.. then installing them all at one time and getting a tune

 

chaotichaox - id like to request for information about external exhaust dumps to be added on this list. i have limited knowledge about them so id like to know more about them.

ps: i already tried the search button.

 

Thanks, will I need to get a tune if I do this?

 

I was wanting some info on the 900x turbo kit from A.M.S for my evo 9.. what price landed in australia I should pay?

 

I was wanting some info on the 900x turbo kit from A.M.S for my evo 9.. what price landed in australia I should pay? its $4,4299 US but my tunner is telling me over 6 grand??
Also im looking at the cosworth 2.2 stroker with this package..
can anyone help??.

 

Well not being a local ausie but having bought parts for my edge gokart from there I can tell you that price may be pretty close once money conversion, freight, and tax gets involved.

 

hey have 06 Evo 9 Mr, looking to get some extended lug nuts, does anybody know the lug size? i just got the car yesterday

 

i was thinking about buying everything piece by piece but it looks like its going to be easier to save and get everything i want at once..

 

awsome write up

 

stock evo 9 lug nut is 21mm. thread pitch is 12x1.50

 

very good info! had my Evo for awhile and still learned something