Saab 9000 (1984 - 1998)
I just recently adjusted my base boost (screwing with the wastegate arm). I shortened the arm to get a good 10 psi. but when i put my foot in it, the boost guage reads 10psi for about 1 second, then it backs off to 5psi for no reason. Im guessing its the APC's fault?
Before i did that i...