like l said its a 1999 cougar. Its a v6 and 2.5 liter engine. Its also an automatic. If its not possible for me to get a blow off valve does anyone know where l could get like an imitation or something? Also the car is not supercharged or a turbo.

If it does not have a turbo charger, why would put a blow-off valve in it? The purpose of a blow-off valve is to dump excess pressure in the intake manifold to atmosphere. Without a turbocharger, an intake manifold CANNOT contain more pressure than atmosphere. There is no excess pressure to dump.

A blow-off valve opens when the throttle closes. So if u were to add one, the engine would probably surge when u let off the throttle & opened the valve.

Not only would it do nothing to hinder performance, it could make u crash.

you can get them on http://Ebaymotors.com and yes you can put it on with the right plumbing, but it will just be for looks.

If the car is not a turbo, why bother getting an imitation blow off valve. That screams ricer and people will give you a hard time for being a poser. Do not be that guy. l own an import and it is not riced out. Domestic cars can fall victim to rice as well.

Use the money that you'd spend on a fake blow off valve and buy something that will actually make the car faster.