A great product for the money.
This was installed on a completely stock (for now) 2002 9-3 SE. The original valve was functioning fine as far as I could tell. It didn't leak when I tested it, so the improvements I noticed weren't from replacing a broken valve.
After installing I noticed a slight but noticeable improvement in low end torque. The Turbo seems to spool up at lower rpm, and is quicker to spool making the car more responsive.
I notice that I can now use 5th gear more around town, and cruise at lower rpms.
It also seems to have made a slight improvement to fuel economy when driving it hard. Since I installed it I've noticed that my fuel consumption doesn't increase as much when I'm driving harder & around town... Maybe because I don't have to use as much throttle or for as long because of the quicker response?.. I'm not sure.
I couldn't recommend this product more. Regardless of how you drive your Saab, this is a must have upgrade.
Rating: [5 of 5 Stars!]