It is drivable. But to make the abs tcs and all that stuff not be lite up in the dash that piece is required. It has nothing to do with the car running or anything. The remanned part comes with a lifetime warranty and you never pay to ship it or have it shipped back.

Many saab owners will tell you this is the only route as a new part costs a lot of money and this company bba-reman, specializes in this stuff and is very reliable, highly recommended, and used often by people on the boards.

Here is the link : BBA reman. ABS, ecu's, throttle bodies, air mass meters, and catalytic converters