I have been talking with a guy who has been working on saabs for many years and was told this. I have a '94 9000CSE turbo with the garrett T25 turbo on it, if I want to I can take a 2.0 exhaust manifold and mate it with a T3 turbo plus a little tweaking(new boost valve and dump valve) I should see a considerable performance difference. If I opt for the ECU upgrade I could see as much as 265 horsepower. Any advice or comments would be greatly appreciated. I am not willing to make any changes until I get some consensus from other owners.