[TryHardKid]

Will a BOV void my warranty? I really want the loud rally car sound from my Aero when I down shift but I don't wanna void my precious warranty... Any thoughts? Or past experiences?

 

[California Saab Tuner]

You get the rally whoosh typically when you upshift, not downshift. You cannot fit a BOV to an Aero without causing the CEL to come on, and in some cases stalling the engine at idle. You can get a cone airfilter that will let out some noise. But I have one on my Viggen, and the noise is rather sedate at best.

You can always try a Forge TWIN piston ram style dump valve and see if it works for you. But can't gurantee it will, and it would almost definetly void the warranty should a claim be made.

 

[john]

You should not fit an atmospheric dumpvalve to Trionic 7 Saabs. You may fit a recirculating DV, but this will not give you the boy racer ptttscchhh sound that you crave.